Note4Students
From UPSC perspective, the following things are important :
Prelims level: Fukuoka Prize
Mains level: Not Much
Noted journalist P. Sainath has been selected as one of the three recipients of the Fukuoka Prize for 2021.
Fukuoka Prize
- The Fukuoka Prize is given annually to distinguished people to foster and increase awareness of Asian cultures, and to create a broad framework of exchange and mutual learning among the Asian people.
- The Prize was established in 1990 by the city of Fukuoka in Japan and the Fukuoka City International Foundation.
- The Grand Prize has earlier been awarded to Muhammad Yunus from Bangladesh, historian Romila Thapar, and sarod maestro Amjad Ali Khan. Eleven Indians have received the Fukuoka Prize so far.
- 115 people from 28 countries and areas have received the Prize in the past 30 years.
Citation for the award
- In a statement issued Mr. Sainath was described as a “very deserving recipient of the Grand Prize of Fukuoka Prize”.
- The Secretariat noted his work for creating a new form of knowledge through his writings and commentaries on rural India and for “promoting civil cooperation”.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Stone age man and his evolution
Mains level: Not Much
Scientists have announced that a skull discovered in northeast China represents a newly discovered human species they have named Homo longi, or “Dragon Man”.
Answer this PYQ in the comment box:
Q.The word ‘Denisovan’ is sometimes mentioned in media in reference to (CSP 2019):
(a) fossils of a kind of dinosaurs
(b) an early human species
(c) a cave system found in North-East India.
(d) a geological period in the history of Indian subcontinent
Who is the “Dragon Man”, the latest Chinese discovery?
- The cranium found in China has been dubbed the “Dragaon Man” or Homo longi, a name that has been derived from the Long Jiang or Dragon River in the Heilongjiang province of China where the city of Harbin is located.
- The skull was reportedly discovered back in 1933, when a bridge was built over the Songhua River.
- For thousands of years, the skull remained buried in sediments.
- Because of the distinctive shape of the skull, which was found almost complete, some members of the team have suggested that it be declared a part of a new species of the genus Homo.
- Significantly, the size of the skull, which has a considerable brain capacity, is comparable to that of modern humans and Neanderthals.
Why is this discovery being considered significant?
- For one, it brings new knowledge about the evolution of Homo sapiens.
- It might help to bridge the gaps between our ancient ancestors called Homo erectus and us.
- This knowledge is important because there is very little consensus in the scientific community about how different human species are related, and which species are our immediate ancestors.
- Smithsonian for instance notes that some palaeontologists believe Homo heidelbergensis to be our immediate ancestors.
- This species was discovered in 1908, and lived about 700,000 to 200,000 years ago in Europe and possibly China and some parts of Africa.
Back2Basics: Species of Humans
- Modern humans are the only human species that exist in the world today.
- While the exact number of human species is a matter of debate, most scientists believe that there are at least 21 of them.
As per the Smithsonian National Museum of Natural History, there are over 21 human species. Major among these are:
(1) Sahelanthropus tchadensis
- Sahelanthropus tchadensis is believed to be the oldest member of the human family tree.
- It lived about 7-6 million years ago somewhere around present-day Chad in Africa.
- It had both ape-like and human-like features and was bipedalled, an ability that may have increased its chances of survival.
(2) Homo erectus
- Homo erectus lived about 1.89 million-110,000 years ago, in Northern, Eastern, and Southern Africa and Western and East Asia.
- ‘Turkana Boy’ is the most complete fossil belonging to this species and is dated to be around 1.6 million years old.
(3) Modern man
- Homo neanderthalensis lived about 400,000-40,000 years ago and co-existed with Homo sapiens for a few thousand years.
- They lived in Europe and in southwestern and central Asia.
- Homo sapiens evolved about 300,000 years ago, and are found worldwide.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Full Ship Shock Trial (FSST)
Mains level: Not Much
The US Navy Friday carried out a ‘full ship shock trial’ on its newest and most advanced nuclear-powered aircraft carrier to ensure its hardness was capable of withstanding battle conditions.
What is a Full Ship Shock Trial (FSST)?
- During World War II, American warships suffered severe damage from enemy mines and torpedoes that had actually missed their target, but exploded underwater in close proximity.
- The US Navy has since worked to improve the shockproofing of their ship systems to minimize damage from such “near miss” explosions.
- In FSSTs, an underwater explosive charge is set off near an operational ship, and system and component failures are documented.
- The FSST probes whether the components survive shock in their environment on the ship; it probes the possibilities of system failures, and large components that could not be otherwise tested.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: First-ever genetically modified rubber planted in Assam
Mains level: Hazards of using GMO crops
A Rubber Board research farm on the outskirts of Guwahati now sports the world’s first genetically modified (GM) rubber plant tailored for the climatic conditions in the Northeast.
GM rubber
- The GM rubber has additional copies of the gene MnSOD, or manganese-containing superoxide dismutase, inserted in the plant.
- The plant was developed at the Kerala-based Rubber Research Institute of India (RRII).
- It is expected to tide over the severe cold conditions during winter — a major factor affecting the growth of young rubber plants in the region.
Why need GM rubber?
- Natural rubber is a native of warm humid Amazon forests and is not naturally suited for the colder conditions in the Northeast, which is one of the largest producers of rubber in India.
- Growth of young rubber plants remains suspended during the winter months, which are also characterized by progressive drying of the soil.
- This is the reason for the long immaturity period of this crop in the region.
What does MnSOD gene offer?
- The MnSOD gene has the ability to protect plants from the adverse effects of severe environmental stresses such as cold and drought.
- Laboratory studies conducted at the RRII showed the GM rubber plants overexpressed the MnSOD gene as expected, offering protection to the cells.
- The plant is thus expected to establish well and grow fast in the region.
- There was no risk of genes flowing from the GM rubber into any other native species, a concern often raised by environmental groups against GM plants in general.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Indian monsoon
Mains level: Monsoon and climate change
Rainfall during retreating monsoon, which parts of South India experience every year, is not a local anomaly and is global in nature and scale, according to a recent study by the University of Sydney.
What is Retreating Monsoon?
- In India, retreating monsoon is the withdrawal of south-west monsoon winds from North India.
- The withdrawal is gradual and takes about three months.
- With the retreat of the monsoons, the clouds disappear and the sky becomes clear. The day temperature starts falling steeply.
- Monsoon rains weaken all over India except few southeastern states.
- It is helpful in Rabi crop cultivation.
What has the research found?
- The research has identified regions in the northern hemisphere that receive the bulk of the rainfall during September, October and November and southern hemisphere that receive most of the rainfall from March to August.
- The discovery that these are part of a global pattern and not one-off occurrences means they can be systematically studied, which will help understand how these communities could be affected by climate change.
- Peninsular India and parts of South-East Asia are among the eight regions examined in the study.
Factors affecting the retreat
- The eight global regions identified by the study that receive most of their rainfall after summer, have several things in common.
- They lie on the eastern fringes of landmasses and are in close proximity to mountain ranges with modest heights.
Two predominant factors cause the phenomenon:
- First, the low mountain range in each region runs from north to south, shielding it from west-bound winds that trigger summer monsoon.
- After summer, the range aids in the ‘orographic lift’ or rising of east-bound air mass from a lower to higher elevation, forming clouds and resulting in rain.
- The second factor is atmospheric convection or vertical movement of air.
- As the earth is heated by the sun, different surfaces absorb different amounts of energy and convection may occur where the surface heats up very rapidly.
- As the surface warms, it heats the overlying air, which gradually becomes less dense than the surrounding air and begins to rise.
- This condition is more favorable from September to February because of the role played by sea surface temperature or water temperature.
Answer this PYQ in the comment box:
Q.The seasonal reversal of winds is the typical characteristic of:
(a) Equatorial climate
(b) Mediterranean climate
(c) Monsoon climate
(d) All of the above climates
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Rotation and Revolution of Earth
Mains level: NA
The summer solstice will happen today around 9:02 am on Monday (Indian Standard Time).
What is Summer Solstice?
- Solstice means “sun stands still” in Latin.
- The longest day of 2021 for those living north of the Equator is June 21.
- This day is characterized by a greater amount of energy received from the sun.
- In technical terms, this day is referred to as the summer solstice, the longest day of the summer season. It occurs when the sun is directly over the Tropic of Cancer, or more specifically right over 23.5-degree north latitude.
The Southern Hemisphere receives most sunlight on December 21, 22 or 23 when the northern hemisphere has its longest nights– or the winter solstice.
Why do we have summer solstice?
- Since Earth rotates on its axis, the Northern Hemisphere gets more direct sunlight between March and September over the course of a day.
- This also means people living in the Northern Hemisphere experience summer during this time.
- The rest of the year, the Southern Hemisphere gets more sunlight.
- During the solstice, the Earth’s axis — around which the planet spins, completing one turn each day — is tilted in a way that the North Pole is tipped towards the sun and the South Pole is away from it.
Answer this PYQ in the comment box:
Q.On 21st June, the Sun (CSP 2019):
(a) Does not set below the horizon at the Arctic Circle
(b) Does not set below the horizon at Antarctic Circle
(c) Shines vertically overhead at noon on the Equator
(d) Shines vertically overhead at the Tropic of Capricorn
Some other facts
- Summer solstice does not mean the earliest sunrise or latest sunset.
- Although June 21 will be the longest day in 2021, it does not necessarily mean that it brings the earliest sunrise or latest sunset.
- It depends on the latitudinal location of the country.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: National Maritime Heritage Complex, Lothal
Mains level: Not Much
In order to showcase the maritime heritage and history of India, a National Maritime Heritage Complex (NMHC) will be developed in the Lothal region of Gujarat.
National Maritime Heritage Complex
- It is to note that the National Maritime Heritage Complex will be made within the ASI site of Lothal that is located 80 km away from Ahmedabad in Gujarat.
- The project, once completed, will be made an international tourist destination in India where people from across the countries can take a look at the maritime heritage of India from ancient to modern times.
- The government is aiming to showcase this via an edutainment approach where the latest technology would be adopted to spread awareness.
- The development will be done in an area expanding 400 acres.
- The complex will have many offerings including National Maritime Heritage Museum, Heritage Theme Park, and Light House Museum.
About Lothal
- Lothal was one of the southernmost cities of the ancient Indus Valley Civilization located in Gujarat.
- Construction of the city began around 2200 BCE.
- According to the ASI, Lothal had the world’s earliest known dock, which connected the city to an ancient course of the Sabarmati river on the trade route between Harappan cities in Sindh and the peninsula of Saurashtra.
- Lothal was a vital and thriving trade Centre in ancient times, with its trade of beads, gems, and valuable ornaments reaching the far corners of West Asia and Africa.
- The techniques and tools they pioneered for bead-making and in metallurgy have stood the test of time for over 4000 years.
- The Lothal site has been nominated as a UNESCO World Heritage Site, and its application is pending on the tentative list of UNESCO.
Answer this question from CSP 2019 in the comment box:
Q. Which one of the following is not a Harappan site?
(a) Chanhudaro
(b) Kot Diji
(c) Sohgaura
(d) Desalpur
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Neutrinos
Mains level: NA
Indian scientists have shown that the geometry of space-time can cause neutrinos to oscillate.
What are Neutrinos?
- A neutrino is a subatomic particle that is very similar to an electron but has no electrical charge and a very small mass, which might even be zero.
- Since neutrinos are electrically neutral, they are not affected by the electromagnetic forces which act on electrons. Hence, they are also called Ghost Particles.
- Neutrinos are affected only by a “weak” sub-atomic force of a much shorter range than electromagnetism and are therefore able to pass through great distances in matter without being affected by it.
- They are also one of the most abundant particles in the universe. As they have very little interaction with matter, however, they are incredibly difficult to detect.
Answer this PYQ in the comment box:
Q.The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?
(a) Gravity is the strongest of the four
(b) Electromagnetism act only on particles with an electric charge
(c) Weak nuclear force causes radioactivity
(d) Strong nuclear force holds protons and neutrons inside the nuclear of an atom
Finding of the new research
- Neutrinos are mysterious particles, produced copiously in nuclear reactions in the Sun, stars, and elsewhere.
- They “oscillate”- meaning that different types of neutrinos change into one another – as has been found in many experiments.
- Probing of oscillations of neutrinos and their relations with mass are crucial in studying the origin of the universe.
- Neutrinos interact very weakly with everything else – trillions of them pass through every human being every second without anyone noticing.
- A neutrino’s spin always points in the opposite direction of its motion, and until a few years ago, neutrinos were believed to be massless.
What makes this possible?
- The geometry of space-time can cause neutrino oscillations through quantum effects even if neutrinos are massless.
- Einstein’s theory of general relativity says that gravitation is the manifestation of space-time curvature.
- Neutrinos, electrons, protons and other particles which are in the category of fermions show a certain peculiarity when they move in presence of gravity.
- Space-time induces a quantum force in addition to gravity between every two fermions.
- This force can depend on the spin of the particles and causes massless neutrinos to appear massive when they pass through matter, like the Sun’s corona or the Earth’s atmosphere.
- Something similar happens for electroweak interactions, and together with the geometrically induced mass, it is enough to cause oscillation of neutrinos.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Silverline Project
Mains level: Not Much
Last week, the Kerala cabinet gave the green light to begin acquiring land for SilverLine, its flagship semi high-speed railway project.
What is the SilverLine project?
- The SilverLine Project entails building a semi high-speed railway corridor through the state linking its southern end and state capital Thiruvananthapuram with its northern end of Kasaragod.
- It is billed as one of the biggest infrastructure enterprises being pushed by the ruling Left government.
- The line is proposed to be 529.45 km long, covering 11 districts through 11 stations.
- When the project is realized, one can travel from Kasaragod to Thiruvananthapuram in less than four hours on trains traveling at 200 km/hr.
- The current travel time on the existing Indian Railways network is 12 hours.
- The project is executed by the Kerala Rail Development Corporation Limited (KRDCL), a joint venture between the Kerala government and the Union Ministry of Railways.
What was the need for the project?
- It has long been argued by urban policy experts that the existing railway infrastructure in the state cannot meet the demands of the future.
- Most trains run with an average speed of 45 km/hr due to a lot of curves and bends on the existing stretch.
- The government claims the SilverLine project is the need of the hour as it can take a significant load of traffic off the existing railway stretch and make travel easier and faster for commuters.
- This will in turn reduce the congestion on roads and help reduce accidents and fatalities.
Issues with the Project
- The unofficial deadline for the project is 2025 but many would say it’s not a realistic target, given the laborious nature of land acquisition in a highly densely populated state like Kerala.
- Acquiring land, especially from private players, in urban areas remains the key challenge for the project.
- There’s also significant opposition to the project by environmentalists citing potential damage to the state’s ecosystem in the path of the proposed route.
- They fear irreversible impact to the state’s rivers, paddy fields, and wetlands, triggering floods and landslides in the future.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Precision Iodine Value Analyzer
Mains level: Not Much
The Council of Scientific and Industrial Research-Central Scientific Instruments Organization (CSIR-CSIO) has developed and transferred the technology of Precision Iodine Value Analyzer (PIVA).
What is Precision Iodine Value Analyzer?
- It is an instrument for the measurement of the degree of unsaturation (iodine value) in vegetable oils.
- This indigenous food testing equipment was recognized by the Food Safety and Standards Authority of India (FSSAI) on World Food Safety Day on June 7, 2021.
- It has applications in oil extraction units, quality control and assurance labs, food regulatory authorities, soaps and cosmetics, bakeries, meat industry, paint industry, biodiesel analysis, and charcoal industry.
- It is also useful in determining adulteration in edible oils and fats.
Measuring iodine value
- Iodine value is conventionally determined using manual titration and a few analytical instruments based on automated titration.
- However, these methods take a longer time to analyze, are costly, and use toxic chemicals.
- Researchers at CSIR-CSIO developed a rapid analysis technique that takes just three minutes to carry out the same analysis.
- Currently, PIVA has been calibrated and tested for coconut, sunflower, mustard, palm, rice bran, soybean, groundnut, olive oil, and ghee.
- This new development is a part of the ongoing effort to strengthen the food testing capabilities by introducing quick and advanced food testing kits.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: New Shephard
Mains level: Space tourism
Last week, Amazon founder and billionaire Jeff Bezos’s space company called Blue Origin concluded the online auction for the first seat on New Shephard, a rocket system meant to take tourists to space.
What is New Shephard?
- New Shephard has been named after astronaut Alan Shephard – the first American to go to space – and offers flights to space over 100 km above the Earth and accommodation for payloads.
- Essentially, it is a rocket system that has been designed to take astronauts and research payloads past the Karman line – the internationally recognized boundary of space.
- The idea is to provide easier and more cost-effective access to space meant for purposes such as academic research, corporate technology development, and entrepreneurial ventures among others.
- Apart from its academic and research-oriented goal, New Shephard will also allow space tourists to experience microgravity by taking them 100 km above the Earth.
Its components
- The rocket system consists of two parts, the cabin or capsule, and the rocket or the booster.
- The cabin can accommodate experiments from small Mini Payloads up to 100 kg.
- As per Blue Origin, the Mini Payloads provide easier space access to students, who are part of educational institutions that are developing their own space programs.
- Further, the cabin is designed for six people and sits atop a 60 feet tall rocket and separates from it before crossing the Karman line, after which both vehicles fall back to the Earth.
- All the six seats in the capsule are meant for passengers, each of whom gets their own window seat. The capsule is fully autonomous and does not require a pilot.
How does it work?
- The system is a fully reusable, vertical takeoff and vertical landing space vehicle that accelerates for about 2.5 minutes before the engine cuts off.
- After separating from the booster, the capsule free falls in space, while the booster performs an autonomously controlled vertical landing back to Earth.
- The capsule, on the other hand, lands back with the help of parachutes.
A boost for space tourism
- Space tourism seeks to give laypeople the ability to go to space for recreational, leisure, or business purposes.
- The idea is to make space more accessible to those individuals who are not astronauts and want to go to space for non-scientific purposes.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Northern Limit of Monsoon (NLM)
Mains level: Indian Monsoon
The Northern Limit of Monsoon (NLM) continues to pass through Diu, Surat, Nandurbar, Bhopal, Nowgong, Hamirpur, Barabanki, Bareilly, Saharanpur, Ambala & Amritsar.
Try this question from CS Mains 2017:
Q.What characteristics can be assigned to monsoon climate that succeeds in feeding more than 50 percent of the won population residing in Monsoon Asia?
What is the Northern Limit of Monsoon?
- NLM, is the northernmost boundary of India up to which monsoon rains have advanced on any given day.
- So, it is a way of tracking the progress of monsoon clouds as they move over India’s landmass.
- The India Meteorological Department (IMD) adds that the monsoon “advances northwards, usually in surges, and covers the entire country around July 15″.
What are the Eastern and Western Arms?
- It is the mountains of southern India that split the south-western winds, giving the Indian monsoon its ‘two arms.
- The western arm of the monsoon is deflected northwards, by the Western Ghats, to (Mumbai) and then on to Pakistan.
- The eastern arm travels up through the Bay of Bengal to (Kolkata) and Assam and is deflected north-westwards by the Himalayas.
Also refer this link:
Explain the formation of Indian monsoons. Highlight the link between monsoons and India’s cropping pattern. (15 marks)
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Edible Oil imports of India
Mains level: NA
The Food Safety and Standards Authority of India had decided this on March 31. This would end the practice to add other edible oil (like palms, rice bran, etc) to mustard oil.
Why such move?
- This is good news for mustard farmers whose fortunes were adversely hit as up to a fifth of mustard oil volume could earlier be blends of other oils.
- But why did India start the practice in the first place? And how has it affected consumer health?
Answer this question from CSP 2018:
Q.Consider the following statements:
- The quantity of imported edible oils is more than the domestic production of edible oils in the last five years.
- The Government does not impose any customs duty on all the imported edible oils as a special case.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Why did the blending begin?
- The Union health ministry had allowed blending in edible vegetable oil in a notification in 1990.
- In 1998, Delhi and other north Indian states witnessed the dropsy epidemic — a disease that caused swelling in the body due to the build-up of fluid in tissues.
- At least 60 people died and 3,000 were hospitalized in the national capital.
- Researchers believed the consumption of mustard oil caused the disease.
Adulteration is hazardous
- Upon investigation, it was found to be adulterated with Argemone Mexicana, a kind of weed that grows with yellow flowers.
- The adulteration, however, was highly suspicious: While mustard is a rabi crop that is cultivated in the winters, Argemone Mexicana grows in April-May.
- This meant that the possibility of mixing mustard seeds with that Argemone mexicana was rare.
- The suspicious adulteration stoked fear among the masses. It started a campaign against the consumption of oil.
- Several studies have found mustard oil unsafe for consumption.
The 1990 decision
- Experts have claimed that the blending of mustard oil was not only dangerous to health but also adversely impacted mustard farming.
- Some groups have also flagged the blending of refined oil.
- Following the Union health ministry’s 1990 notification allowing for the blending of edible vegetable oil, the FSSAI rolled out regulations in the regard in 2006.
- Producers and other companies involved in blending were regularised through the Agriculture Produce (Grading and Marking) Act (AGMARK).
- It also made it mandatory to write the kind of oil used for blending over the packet.
- The companies involved in blending strongly advocated for the cause, despite reports about its excess and unregulated use. The governments over the years have been tight-lipped about it.
Has blending led to dependence over the import of oil?
- In 1990-91, India was self-reliant in mustard oil production and produced 98 percent of the oil needed.
- Blending mustard oil with other edible oils considered to bolster nutritional profile, taste, and quality.
- Despite the harmful effects, the processing industry took advantage of blending.
- Cheap palm oil would be blended up to 80 percent in mustard oil sometimes.
- As a result, profits of mustard farmers dried up, which discouraged them from cultivating the crop.
- This could be one of the reasons behind India’s increasing dependency on oil imports over the last two decades.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: PASIPHAE
Mains level: Theory of expansion of the universe
The development of a vital instrument PASIPHAE, which will be used in upcoming sky surveys to study stars, is being led by an Indian astronomer.
What is PASIPHAE?
- PASIPHAE stands for Polar-Areas Stellar-Imaging in Polarisation High-Accuracy Experiment.
- It is an international collaborative sky surveying project. Scientists aim to study the polarisation in the light coming from millions of stars.
- The name is inspired by Pasiphae, the daughter of Greek Sun God Helios.
- The survey will use two high-tech optical polarimeters to observe the northern and southern skies, simultaneously.
- It will focus on capturing starlight polarisation of very faint stars that are so far away that polarisation signals from there have not been systematically studied.
- By combining the data, astronomers will perform a maiden magnetic field tomography mapping of the interstellar medium of very large areas of the sky using a novel polarimeter instrument known as WALOP.
Why is PASIPHAE important?
- Since its birth about 14 billion years ago, the universe has been constantly expanding, as evidenced by the presence of Cosmic Microwave Background (CMB) radiation which fills the universe.
- Immediately after its birth, the universe went through a short inflationary phase during which it expanded at a very high rate before it slowed down and reached the current rate.
- However, so far, there have only been theories and indirect evidence of expansion associated with the early universe.
- A definitive consequence of the inflationary phase is that a tiny fraction of the CMB radiation should have its imprints in the form of a specific kind of polarisation (known scientifically as a B-mode signal).
- All previous attempts to detect this signal met with failure mainly due to the difficulty posed by our galaxy, the Milky Way, which emits copious amounts of polarized radiation.
- Besides, it contains a lot of dust clouds that are present in the form of clusters. When starlight passes through these dust clouds, they get scattered and polarized.
What will PASIPHAE do?
- The PASIPHAE survey will measure starlight polarisation over large areas of the sky.
- This data along with distances to the stars will help create a 3-Dimensional model of the distribution of the dust and magnetic field structure of the galaxy.
- Such data can help remove the galactic polarized foreground light and enable astronomers to look for the elusive B-mode signal.
What is WALOP?
- Wide Area Linear Optical Polarimeter (WALOP) is an instrument when mounted on two small optical telescopes, that will be used to detect polarized light signals emerging from the stars along high galactic latitudes.
- The images will simultaneously have the finest of details of a star along with its panoramic background.
- WALOP will operate on the principle that at any given time, the data from a portion of the sky under observation will be split into four different channels.
- Depending on the manner in which light passes through the four channels, the polarisation value from the star is obtained.
- That is, each star will have four corresponding images which when stitched together will help calculate the desired polarisation value of a star.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: EnVision Mission
Mains level: Interplanetary missions
Following NASA’s footsteps, the European Space Agency (ESA) announced that it has selected EnVision as its next orbiter that will visit Venus sometime in the 2030s.
Last week, NASA selected two missions to the planet Venus, Earth’s nearest neighbour. The missions called DAVINCI+ and VERITAS have been selected based on their potential for scientific value and the feasibility of their development plans.
What is EnVision?
- EnVision is an ESA-led mission with contributions from NASA. It is likely to be launched sometime in the 2030s.
- The earliest launch opportunity for EnVision is 2031, followed by 2032 and 2033.
- Once launched on an Ariane 6 rocket, the spacecraft will take about 15 months to reach Venus and will take 16 more months to achieve orbit circularization.
- The spacecraft will carry a range of instruments to study the planet’s atmosphere and surface, monitor trace gases in the atmosphere and analyses its surface composition.
What are other such missions?
- EnVision will follow another ESA-led mission to Venus called ‘Venus Express’ (2005-2014) that focused on atmospheric research and pointed to volcanic hotspots on the planet’s surface.
- Other than this, Japan’s Akatsuki spacecraft has also been studying the planet’s atmosphere since 2015.
Why are scientists interested in studying Venus?
- At the core of the ESA’s mission is the question of how Earth and Venus evolved so differently from each other considering that they are roughly of the same size and composition.
- Venus is the hottest planet in the solar system because of the heat that is trapped by its thick cloud cover.
- Last year, a team of scientists reported that they had found phosphine gas (a chemical produced only through biological processes) in the atmosphere of Venus.
- This triggered excitement in the scientific community that some life forms might be supported by the planet.
- But the existence of life on the planet is nearly impossible given the high temperatures of Venus and its acidic atmosphere.
Back2Basics: Venus Planet
- For those on Earth, Venus is the second-brightest object in the sky after the moon.
- It appears bright because of its thick cloud cover that reflects and scatters light.
- But while Venus, which is the second closest planet to the Sun, is called the Earth’s twin because of their similar sizes, the two planets have significant differences between them.
- For one, the planet’s thick atmosphere traps heat and is the reason that it is the hottest planet in the solar system, despite coming after Mercury, the closest planet to the Sun.
- Surface temperatures on Venus can go up to 471 degrees Celsius, which is hot enough to melt lead.
- Further, Venus moves forward on its orbit around the Sun but spins backwards around its axis slowly.
- This means on Venus the Sun rises in the west and sets in the East.
- One day on Venus is equivalent to 243 Earth days because of its backward spinning, opposite to that of the Earth’s and most other planets.
- Venus also does not have a moon and no rings.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Content delivery network (CDN)
Mains level: Need for data localization
Several big websites around the world went down for about half an hour because of a major issue with the content delivery network (CDN) of American cloud computing services provider Fastly.
Global internet outage: Which websites were affected?
- com, Reddit, Twitch, Spotify, Pinterest, Stack Overflow, GitHub, gov.uk, Hulu, HBO Max, Quora, PayPal, Vimeo and Shopify are some of the big names.
- Prominent news websites impacted were the Financial Times, the Guardian, the New York Times, CNN, and Verge, to name some.
- Most users would have seen a 503 error when trying to access these websites, indicating that the browser was not able to access the server.
What is Fastly?
- Fastly is a cloud computing services provider, which offers CDN, edge computing, cloud storage services.
- All of its geographies, including the three stations it has in India — Chennai, Mumbai and New Delhi — were suffering from “Degraded Performance”.
Answer this PYQ from CSP 2018:
Q.The terms ‘WannaCry, Petya, Eternal Blue’ sometimes mentioned news recently are related to
(a) Exoplanets
(b) Crypto currency
(c) Cyber attacks
(d) Mini satellites
What is a CDN?
- A CDN refers to a geographically distributed group of servers that work together to provide fast delivery of Internet content.
- They house content close to the telecom service providers’ networks.
- Majority of web traffic across the world today is routed through CDNs.
- Platforms such as Netflix, Facebook, Amazon — ones with large quantities of data held in global libraries — host their geographically relevant content closer to where that content is to be consumed.
- This ensures the end customer is able to access the content faster.
- Another reason companies rely on these CDNs is to help protect their sites against traffic spikes, distributed denial of service (DDOS) attacks, etc.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: CHIME Telescope, Fast Radio Bursts
Mains level: NA
Scientists with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Collaboration have assembled the largest collection of fast radio bursts (FRBs) in the telescope’s first FRB catalog.
CHIME Telescope
- CHIME is an interferometric radio telescope at the Dominion Radio Astrophysical Observatory in British Columbia, Canada.
- It consists of four antennas consisting of 100 x 20-meter cylindrical parabolic reflectors with 1024 dual-polarization radio receivers suspended on support above them.
- The telescope receives radio signals each day from half of the sky as the Earth rotates.
- While most radio astronomy is done by swiveling a large dish to focus light from different parts of the sky, CHIME stares, motionless, at the sky, and focuses incoming signals using a correlator.
- This is a powerful digital signal processor that can work through huge amounts of data, at a rate of about seven terrabytes per second, equivalent to a few percent of the world’s Internet traffic.
What are FRBs?
- FRBs are oddly bright flashes of light, registering in the radio band of the electromagnetic spectrum, which blaze for a few milliseconds before vanishing without a trace.
- These brief and mysterious beacons have been spotted in various and distant parts of the universe, as well as in our own galaxy.
- Their origins are unknown and their appearance is highly unpredictable.
- But the advent of the CHIME project has nearly quadrupled the number of fast radio bursts discovered to date.
- With more observations, astronomers hope soon to pin down the extreme origins of these curiously bright signals.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Hindu Kush Himalayas
Mains level: Melting of glaciers
Up to two billion people in southeast Asia can face food and water shortages even as the Hindu Kush Himalayan (HKH) mountain ranges lose up to two-thirds of its ice by 2100, a United Nations-backed research flagged.
Hindu Kush Himalayas
- The HKH region, often referred to as the ‘Third Pole’, is spread over 3,500 square kilometers across eight countries including India, Nepal, and China.
- The range forms the western section of the Hindu Kush Himalayan Region (HKH) and is the westernmost extension of the Pamir Mountains, the Karakoram, and the Himalayas.
- It divides the valley of the Amu Darya (the ancient Oxus) to the north from the Indus River valley to the south.
- It contains the world’s third-largest storage of frozen water after the Antarctica and Arctic.
- Over 240 million people live in the region’s mountains; 1.7 billion live in the river basins downstream, while food grown in these basins reaches three billion people.
Continuous warming
- HKH region continues to warm through 21st century even if the world was able to limit global warming at the agreed 1.5 degrees Celsius.
- Another study published in 2019 on the ice thickness of glaciers had estimated that glaciers in the HKH may contain 27 percent less ice than previously suggested.
- The HKH region lies downwind from some of the most heavily polluted places on Earth. This threatens agriculture, climate as well as monsoon patterns.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Sardar Sarovar Dam
Mains level: NA
The Sardar Sarovar Dam is providing irrigation water in summer for the first time in history.
Sardar Sarovar Dam
- The Sardar Sarovar Narmada Dam is a terminal dam built on the Narmada river at Kevadia in Gujarat’s Narmada district.
- Four Indian states, Gujarat, Madhya Pradesh, Maharashtra and Rajasthan, receive water and electricity supply from the dam.
- The foundation stone of the project was laid out by Prime Minister Jawaharlal Nehru on 5 April 1961.
- The project took form in 1979 as part of a development scheme funded by the World Bank through their International Bank for Reconstruction and Development, to increase irrigation and produce hydroelectricity
- Called the ‘lifeline of Gujarat’, it usually has no water for irrigation during summers.
Answer this PYQ in the comment box:
Q.Which one of the following pairs is not correctly matched?
Dam/Lake River
(a) Govind Sagar: Satluj
(b) Kolleru Lake: Krishna
(c) Ukai Reservoir: Tapi
(d) Wular Lake: Jhelum
A successful model of river water sharing
- River Narmada is a classic case of Integrated River Basin Planning, Development, and Management, with water storage available in all major, medium, and minor dams on the main river and its tributaries.
- Its water is shared amongst four party states – Gujarat, Rajasthan, Madhya Pradesh and Maharashtra — in the ratio stipulated by the 1979 award of the Narmada Water Dispute Tribunal.
How has it saved water for summers?
- During the monsoon from July to October, the reservoir operation is well synchronized with the rain forecast in the catchment area.
- The strategic operation of River Bed Power House (RPBH) ensures that minimum water flows downstream into the sea and maximum water is used during the dam overflow period, which is not calculated in the annual water share.
- These measures help in maximizing the annual allocation of water share.
- Similarly, in non-monsoon months, the measures for efficient use of the allocated share typically include minimizing the conventional and operational losses.
- It includes: avoiding water wastage, restricting water-intensive perennial crops, adopting of Underground Pipelines (UGPL); proper maintenance and operation of canals on a rotational basis.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now
Note4Students
From UPSC perspective, the following things are important :
Prelims level: Election Commission
Mains level: Appointment in constitutional bodies
President Ram Nath Kovind on Tuesday appointed of Anup Chandra Pandey, a retired Uttar Pradesh cadre IAS officer, to the post of Election Commissioner.
Election Commission of India (ECI)
- The ECI is a constitutional body responsible for administering elections in India according to the rules and regulations mentioned in the Constitution of India.
- It was established on January 25, 1950.
- The major aim of the election commission of India is to define and control the process for elections conducted at various levels, Parliament, State Legislatures, and the offices of the President and Vice President of India.
- It can be said that the Election Commission of India ensures the smooth and successful operation of the democracy.
Functions
According to Article 324 of the Indian Constitution:
- the ECI has superintendence, direction, and control of the entire process for conduct of elections to Parliament and Legislature (state legislative assembly & state legislative council) of every State and to
- the offices of President and Vice-President of India
Answer this PYQ in the comment box:
Q.Consider the following statements:
- The Election Commission of India is a five-member body.
- Union Ministry of Home Affairs decides the election schedule for the conduct of both general elections and bye-elections.
- Election Commission resolves the disputes relating to splits/mergers of recognized political parties.
Which of the statements given above is/are correct? (CSP 2017)
(a) 1 and 2 only
(b) 2 only
(c) 2 and 3 only
(d) 3 only
Its composition
- Initially, the commission had only a Chief Election Commissioner. Presently, it consists of a Chief Election Commissioner and two Election Commissioners.
- For the first time, two additional Commissioners were appointed on 16th October 1989 but they had a very short term till 1st January 1990.
- Afterward, on 1st October 1993, two additional Election Commissioners were appointed.
- The concept of a multi-member Commission has been in operation since then, with decision-making power by majority vote.
Appointment & Tenure of Commissioners
- The President has the power to select Chief Election Commissioner and Election Commissioners.
- They have a tenure of six years, or up to the age of 65 years, whichever is earlier.
- They have the same status and receive pay and perks as available to Judges of the Supreme Court of India.
- The CEC can be removed from office only through accusation by Parliament.
- The election commissioner or a regional commissioner shall not be removed from office except on the recommendation of the CEC.
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
Attend Now