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.
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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.
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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.
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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.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Operation Pangea XIV
Mains level: NA
More than 1.10 lakh web links, including websites and online marketplaces, have been taken down in the operation Pangea XIV.
Operation Pangea XIV
- Code-named “Operation Pangea XIV”, the exercise was coordinated by Interpol.
- It involved the police, customs, and health regulatory authorities of 92 countries against the sale of fake and illicit medicines and medical products.
- Indian agencies also participated in the operation, said an official of the Central Bureau of Investigation that is the nodal body for the Interpol in the country.
- It showed that criminals were continuing to cash in on the huge demand for personal protection and hygiene products due to the COVID-19 pandemic.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Supersonic plane
Mains level: NA
The United Airlines of USA has announced it was ordering 15 Overture planes with the ability to travel at Mach 1.7, faster than the speed of sound, from the Denver-based startup Boom.
What is a Supersonic Plane?
- Supersonic aircraft are planes that can fly faster than the speed of sound.
- The technology for supersonic flights is actually over 70 years old, but only recently has been used for commercial flying.
- Before 1976, when the first commercial supersonic flight took off, the planes were used entirely for military purposes.
- Usually, supersonic planes can travel at the speed of around 900 kmph, twice the speed of normal aircraft.
What about the Overture supersonic plane?
- The Overture aircraft would travel at the speed of Mach 1.7 or 1,805 kmph with a range of 4,250 nautical miles. In a single flight, it could carry 65 to 88 passengers and reach an altitude of 60,000 ft.
- The company has expressed confidence in getting an “experimental” jet ready by 2022, start rolling out aircraft by 2025 and eventually open them for passengers by 2029.
- It claims to build on Concorde’s legacy through faster, more efficient and sustainable technology.
Challenges with supersonic planes
Flying passengers at a supersonic speed is accompanied by a whole set of challenges.
- Firstly, the costs of making “sustainable” supersonic planes are extremely high.
- The very nature of its flying — using excessive amounts of fuel and energy — is likely to have high environmental costs.
- Despite the use of sustainable fuels, greenhouse gas emissions are not nullified.
- Secondly, the very speed of the planes results in producing excessive amounts of noise pollution in the environment.
- The “Sonic Boom” created by these planes feels like an explosion to the human ear.
- This, thus, limits where and when the supersonic planes can fly. They can only reach their actual speed until they are far enough from people and completely over the ocean.
- Lastly, it would not be economically feasible for everyone. Only the very rich can afford supersonic planes, as a ticket is likely to be way costlier than a first-class ticket of a regular plane.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Boha Geoglyphs
Mains level: NA
Using satellite observations and field visits, two independent researchers from France have identified eight sites around Jaisalmer in the Thar Desert, that show linear features resembling geoglyphs.
What are geoglyphs?
- Geoglyphs are large, un-explained geometrical patterns on land usually proposed to be man-made features.
- The largest concentration of geoglyphs is reported from southern Peru, covering an area of about 1,000 square km.
- A new paper published notes that the identified geoglyphs in the Thar Desert cover an area of about 6 square km.
Boha Geoglyphs in Thar
- The authors’ main area of interest was Boha, a small village 40 km to the north of Jaisalmer where they noticed a series of concentric and linear features.
- They named these features Boha geoglyphs and suggested that the features could be at least 150 years old.
- It is however conceivable that they were built at the beginning of the British colonial period, in the middle of the 19th century.
How are they patterned?
- The Boha geoglyphs are clearly manmade as the main unit is a giant spiral, but they have been eroded due to the cars running over the lines lately.
- So, they are clearly not formed by weathering or another natural phenomenon.”
- The observed features might have been formed naturally, but degraded over time due to both natural and human-related causes.
Degraded over time
- The rocky terrain is home to a typical weathering feature, especially over the iron-rich sandstone and shale beds.
- Here, extreme aridity and high temperature lead to slow geochemical translocation of minerals for centuries, such that the heavier minerals like iron and manganese move away from the lighter minerals.
- This lead to the gradual formation of alternate bands of harder and softer mineral concentrations.
- With time the areas with softer materials get slowly eroded, while the harder ones stand out, producing the typical concentric or box-like geometric features.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Sea Snot, Marmara Sea
Mains level: Algal bloom
There has been growing environmental concern in Turkey over the accumulation of ‘sea snot’, a slimy layer of grey or green sludge in the country’s seas, which can cause considerable damage to the marine ecosystem.
What is ‘Sea Snot’?
- ‘Sea snot’ is marine mucilage that is formed when algae are overloaded with nutrients as a result of water pollution combined with the effects of climate change.
- A ‘sea snot’ outbreak was first recorded in the country in 2007. Back then, it was also spotted in the Aegean Sea near Greece.
- But the current outbreak in the Sea of Marmara is by far the biggest in the country’s history.
- The nutrient overload occurs when algae feast on warm weather caused by global warming. Water pollution adds to the problem.
- Environmental experts have said that the overproduction of phytoplankton caused by climate change and the uncontrolled dumping of household and industrial waste into the seas has led to the present crisis.
Where has it been found?
- Turkey’s Sea of Marmara, which connects the Black Sea to the Aegean Sea, has witnessed the largest outbreak of ‘sea snot’.
- The sludge has also been spotted in the adjoining Black and Aegean seas.
How badly can the crisis affect the marine ecosystem?
- The growth of the mucilage, which floats upon the surface of the sea like brown phlegm, is posing a severe threat to the marine ecosystem of the country.
- Divers have said that it has caused mass deaths among the fish population, and also killed other aquatic organisms such as corals and sponges.
- The mucilage is now covering the surface of the sea and has also spread to 80-100 feet below the surface.
- If unchecked, this can collapse to the bottom and cover the sea floor, causing major damage to the marine ecosystem.
- Over a period of time, it could end up poisoning all aquatic life, including fishes, crabs, oysters, mussels and sea stars.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Echolocation
Mains level: NA
A technique used by animals such as dolphins, whales, and bats to navigate their surroundings can also be used by blind people to get around better and have greater independence and well-being, researchers at Durham University in the UK have shown.
What is Echolocation?
- Echolocation, also called biosonar, is a biological sonar used by several animal species.
- Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them.
- They use these echoes to locate and identify the objects.
What has the new study found?
- The same technique can help blind people locate still objects by producing clicking sounds from their mouth and hands.
- The researchers organized a 10-week training programme, in which 12 blind and 14 sighted volunteers aged between 21 and 79 were taught click-based echolocation.
- The volunteers were trained in distinguishing between the size of objects, orientation perception and virtual navigation.
- At the end of the training, the participants had been able to improve their ability to navigate using clicking noises either from one’s mouth, walking cane taps or footsteps.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: CIBER 2 Mission
Mains level: NA
A NASA-funded rocket’s launch window will open at the White Sands Missile Range in New Mexico, USA. The aim of this mission is to count the number of stars that exist in the Universe.
Answer this PYQ from CSP 2020 in the comment box:
Q.“The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometers long, with lasers shining between the craft.” The experiment in question refers to
(a) Voyager-2
(b) New horizons
(c) Lisa Pathfinder
(d) Evolved LISA
What is CIBER-2?
- In order to roughly estimate the number of stars in the Universe, scientists have estimated that on average each galaxy consists of about 100 million stars, but this figure is not exact.
- The figure of 100 million could easily be an underestimation, probably by a factor of 10 or more.
- To put this into perspective, an average of 100 million stars in each galaxy (there an estimated 2 trillion of them as per NASA), would give a total figure of one hundred quintillion stars or 1 with 21 zeroes after it.
- NASA notes that if this figure is accurate, it would mean that for every grain of sand on Earth, there are more than ten stars.
- But this calculation assumes that all stars are inside galaxies, which might not be true and this is what the CIBER-2 instrument will try to find out.
How will CIBER-2 count stars?
- NASA notes that the instrument will not actually count individual stars but it will instead detect the extragalactic background light
- It is all of the light that has been emitted throughout the history of the Universe.
- From all of this extragalactic background light, the CIBER-2 will focus on a portion of this called cosmic infrared background, which is emitted by some of the most common stars.
- Essentially, this approach is aiming to look at how bright this light is to give scientists an estimate of how many of these stars are out there.
- The ESA infrared space observatory Herschel also counted the number of galaxies in infrared and measured their luminosity previously.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: SPAG9
Mains level: NA
The National Institute of Immunology (NII) has received a trademark for India’s First Indigenous Tumor Antigen SPAG9.
About SPAG9
- India’s first indigenous tumor antigen SPAG9 was discovered by Dr Anil Suri in 1998 who is heading the Cancer Research Program at NII.
- In a recent development, the SPAG9 antigen has received the trademark ASPAGNII-TM.
- Currently, ASPAGNIITM is being used in dendritic cell (DC) based immunotherapy in cervical, ovarian cancer and will also be used in breast cancer.
What is immunotherapy?
- Immunotherapy is a new approach that exploits the body’s inner capability to put up a fight against cancer.
- With this approach, either the immune system is given a boost, or the T cells are “trained’’ to identify recalcitrant cancer cells and kill them.
- In this personalized intervention, those patients expressing SPAG9 protein can be treated with DC-based vaccine approach.
- In DC-based vaccine, patient’s cells called monocytes from their blood are collected and modified into what are called dendritic cells.
- These dendritic cells are primed with ASPAGNIITM and are injected back to the patient to help the ‘fighter’ cells, or T-cells, in the body to kill the cancer cells.
Why need such therapy?
- DC-based immunotherapy is safe, affordable and can promote antitumor immune responses and prolonged survival of cancer patients.
- The ASPAGNIITM is a true example of translational cancer research and the Atmanirbhar Bharat spirit.
- This will be a real morale boost in affordable, personalized, and indigenous products for cancer treatment.
Answer this PYQ in the comment box:
Q.‘RNA Interference (RNAi)’ technology has gained popularity in the last few years. why?
- It is used in developing gene silencing therapies
- It can be used in developing therapies for the treatment of cancer
- It can be used to developer hormone replacement therapies
- It can be used to produce crop plants that are resistant to viral pathogens
Select the correct answer using the code given below.
a) 1, 2 and 4
b) 2 and 3
c) 1 and 3
d) 1 and 4 only
The burden of cancer in India
- Cancer kills 8.51 lakh people in India every year (International Agency for Research on Cancer, 2020).
- As per World Health Organization (WHO), one in 10 Indians will develop cancer during their lifetime, and one in 15 will die of cancer.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Digital Services Taxes
Mains level: Read the attached story
The US government has announced the further suspension of punitive tariffs for six months on India, Austria, Italy, Spain, Turkey, and the UK while it continues to resolve the DST investigation amid the ongoing multilateral negotiations at the OECD and the G20.
Do you remember?
GAFA tax—named after Google, Apple, Facebook, Amazon—is a proposed digital tax to be levied on large technology and internet companies.
What are the Digital Services Taxes in India?
- The NDA government had moved an amendment in the Finance Bill 2020-21 imposing a 2 percent digital service tax on trade and services by non-resident e-commerce operators with a turnover of over Rs 2 crore.
- The new levy has expanded the ambit of the equalization levy for non-resident e-commerce operators involved in the supply of services, including the online sale of goods and provision of services.
- E-commerce operators are obligated to pay the tax at the end of each quarter.
- Estimates by the USTR indicate that the value of the DST payable by US-based company groups to India will be up to approximately $55 million per year.
Also read:
What are Digital Services Taxes?
What is the story?
- The US is focused on finding a multilateral solution to a range of key issues related to international taxation, including our concerns with digital services taxes.
- It is trying to reaching a consensus on international tax issues through the OECD and G20 processes.
Investigation regarding DST
- The US has conducted a year-long investigation into digital services taxes imposed by countries, stating that they are against tech companies like Apple, Amazon, Google, and Facebook.
- It had determined that the digital services taxes adopted by Austria, India, Italy, Spain, Turkey, and the UK has discriminated against US digital companies and were inconsistent with principles of international taxation, and burdened US companies.
What’s the case against India?
- In the case of India, the USTR’s proposed course of action includes additional tariffs of up to 25 percent ad valorem on an aggregate level of trade.
- Around 26 categories of goods are in the preliminary list of products that would be subject to the additional tariffs.
- This includes shrimps, basmati rice, cigarette paper, cultured pearls, semi-precious stones, silver powder and silver articles of jewelry, gold mixed link necklaces, and neck chains, and certain furniture of bentwood.
Why does India need DST?
- The agenda to reform international tax law so that digital companies are taxed where economic activities are carried is still a work in progress.
- Due to this, countries are worried that they might cede their right to tax incomes. Therefore, many countries have either proposed or implemented a digital services tax.
- The proliferation of digital service taxes (DSTs) is a symptom of the changing international economic order.
- Countries such as India which provides large markets for digital corporations seek a greater right to tax incomes.
- The taxation of the digitalized economy turned out to be a relatively contentious issue because there is a huge asymmetry in digital service providers and consumers.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Missions on Venus
Mains level: Planetory exploration
NASA has selected two missions to the planet Venus, Earth’s nearest neighbor. The missions are called DAVINCI+ and VERITAS.
DAVINCI+ and VERITAS
(1) DAVINCI+
- DAVINCI+ is short for ‘Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging’ and is the first US-led mission to the planet’s atmosphere since 1978.
- It will try to understand Venus’ composition to see how the planet formed and evolved.
- This mission also consists of a decent sphere that will pass through the planet’s thick atmosphere and make observations and take measurements of noble gases and other elements.
- Significantly, this mission will also try to return the first high-resolution photographs of a geological feature that is unique to Venus.
- This feature, which is called “tesserae” may be comparable to Earth’s continents.
- The presence of tesseraes may suggest that Venus has tectonic plates like Earth.
(2) VERITAS
- The second mission called VERITAS is short for ‘Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy’.
- It will map the planet’s surface to determine its geologic history and understand the reasons why it developed so differently from Earth.
- VERITAS will orbit Venus with a radar that will help to create a 3D reconstruction of its topography which might be able to tell scientists if processes such as plate tectonics and volcanism are still active there.
- This mission will also map the emissions from Venus’s surface that may help in determining the type of rocks that exist on Venus–a piece of information that is not exactly known yet.
- It will also determine if active volcanoes are releasing water vapor into the atmosphere.
Why study Venus?
- The results from DAVINCI+ are expected to reshape the understanding of terrestrial planet formation in the solar system and beyond.
- Taken together, both missions are expected to tell scientists more about the planet’s thick cloud cover and the volcanoes on its surface.
- Further, scientists speculate about the existence of life on Venus in its distant past and the possibility that life may exist in the top layers of its clouds where temperatures are less extreme.
Have humans visited Venus?
- Because of the planet’s harsh environment, no humans have visited it and even the spacecraft that have been sent to the planet have not survived for a very long time.
- Venus’ high surface temperatures overheat electronics in spacecraft in a short time, so it seems unlikely that a person could survive for long on the Venusian surface.
- So far, spacecraft from several nations have visited the planet.
- The first such spacecraft was the Soviet Union’s Venera series (the spacecraft, however, could not survive for long because of the planet’s harsh conditions).
- It was followed by NASA’s Magellan Mission that studied Venus from 1990-1994. As of now, Japan’s Akatsuki mission is studying the planet from Orbit.
Back2Basics: Venus
- 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.
- Surface temperatures on Venus can go up to 471 degrees Celsius, which is hot enough to melt lead, NASA notes. Surface temperatures on Venus can go up to 471 degrees Celsius, which is hot enough to melt lead, NASA notes.
Some unknown facts
- 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.
- 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.
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From UPSC perspective, the following things are important :
Prelims level: Artificial Sun
Mains level: Concept behind artificial sun
China’s Experimental Advanced Superconducting Tokamak (EAST), which mimics the energy generation process of the sun, set a new record.
What is China’s ‘artificial sun’ EAST?
- The Experimental Advanced Superconducting Tokamak (EAST) reactor is an advanced nuclear fusion experimental research device.
- The purpose of the artificial sun is to replicate the process of nuclear fusion, which is the same reaction that powers the sun.
- The EAST is one of three major domestic tokamaks that are presently being operated across the country.
- Apart from the EAST, China is currently operating the HL-2A reactor as well as J-TEXT.
- Since it first became operational in 2006, the EAST has set several records for the duration of confinement of exceedingly hot plasma.
- The EAST project is part of the International Thermonuclear Experimental Reactor (ITER) facility, which will become the world’s largest nuclear fusion reactor when it becomes operational in 2035.
- The project includes the contributions of several countries, including India, South Korea, Japan, Russia and the United States.
How does the ‘artificial sun’ EAST work?
- The EAST Tokamak device is designed to replicate the nuclear fusion process carried out by the sun and stars.
- Nuclear fusion is a process through which high levels of energy are produced without generating large quantities of waste.
- Previously, energy was produced through nuclear fission — a process in which the nucleus of a heavy atom was split into two or more nuclei of lighter atoms.
Fission vs. Fusion
- While fission is an easier process to carry out, it generates far more nuclear waste.
- Unlike fission, fusion also does not emit greenhouse gases and is considered a safer process with a lower risk of accidents.
- Once mastered, nuclear fusion could potentially provide unlimited clean energy and very low costs.
But what is Fusion?
- For nuclear fusion to occur, tremendous heat and pressure are applied on hydrogen atoms so that they fuse together. `
- The nuclei of deuterium and tritium — both found in hydrogen — are made to fuse together to create a helium nucleus, a neutron along with a whole lot of energy.
- Fuel is heated to temperatures of over 150 million degrees C so that it forms a hot plasma “soup” of subatomic particles.
- With the help of a strong magnetic field, the plasma is kept away from the walls of the reactor to ensure it does not cool down and lose its potential to generate large amounts of energy.
- The plasma is confined for long durations for fusion to take place.
What is the latest record and why does it matter?
- The EAST reactor set a new record on Friday when it achieved a plasma temperature of 216 million degrees Fahrenheit and also managed to run for 20 seconds at 288 million degrees Fahrenheit.
- To put this in perspective, the sun’s core only reaches about 15 million degrees Celsius, which means the reactor was able to touch temperatures that are 10 times hotter than that.
- The next goal for the scientists behind the experimental reactor is to maintain the high temperature for a long period of time. Previously, the EAST had reached a record temperature of 100 million degrees Celsius in 2018.
China is not the only
- But China is not the only country that has achieved high plasma temperatures.
- In 2020, South Korea’s KSTAR reactor set a new record by maintaining a plasma temperature of over 100 million degrees Celsius for 20 seconds.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Onset of Monsoon, ITCZ, etc.
Mains level: Factors that influence the onset of south-west monsoons, Indian Monsoon
- The monsoon’s arrival over Kerala has been delayed to June 3, according to an update by the India Meteorological Department (IMD).
- Private weather forecast agency, Skymet, however, said that the monsoon had arrived.
- This was because two of the three criteria — as defined by the IMD — had been met.
- Currently, IMD’s own data indicated that except for the OLR, the other criteria were met. Thus, there is an element of subjectivity in arrival.
What are those criterias defined by IMD?
- Rain-bearing westerlies being at a minimum depth and speed;
- At least 60% of the available 14 stations in Kerala and coastal Karnataka, reporting rainfall of 2.5 mm or more for two consecutive days after May 10;
- A certain degree of clouding, indicated by a parameter called ‘outgoing long wave radiation’ (OLR), being below 200 W/square meter.
What is meant by ‘Outgoing Long Wave Radiation’ (OLR)?
- Outgoing Long-wave Radiation (OLR) is electromagnetic radiation of wavelengths from 3–100 μm emitted from Earth and its atmosphere out to space in the form of thermal radiation.
- It is also referred to as up-welling long-wave radiation and terrestrial long-wave flux, among others.
- The flux of energy transported by outgoing long-wave radiation is measured in W/m.
- In the Earth’s climate system, long-wave radiation involves processes of absorption, scattering, and emissions from atmospheric gases, aerosols, clouds and the surface.
- Over 99% of outgoing long-wave radiation has wavelengths between 4 μm and 100 μm, in the thermal infrared part of the electromagnetic spectrum.
Factors responsible for south-west monsoon formation:
- Intense heating of Tibetan plateau during summer months.
- Permanent high pressure cell in the South Indian Ocean (east to north-east of Madagascar in summer).
Factors that influence the onset of south-west monsoons:
- Above points +
- Subtropical Jet Stream (STJ).
- Tropical Easterly Jet (African Easterly Jet).
- Inter Tropical Convergence Zone.
Factors that influence the intensity of south-west monsoons:
- Strengths of Low pressure over Tibet and high pressure over southern Indian Ocean.
- Somali Jet (Findlater Jet).
- Somali Current (Findlater Current).
- Indian Ocean branch of Walker Cell.
- Indian Ocean Dipole.
Factors responsible for north-east monsoon formation:
- Formation and strengthening of high pressure cells over Tibetan plateau and Siberian Plateau in winter.
- Westward migration and subsequent weakening of high pressure cell in the Southern Indian Ocean.
- Migration of ITCZ to the south of India.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Indian Broadcasting Foundation
Mains level: Self regulation by electronic media
The Indian Broadcasting Foundation (IBF), the apex body of broadcasters, is expanding its purview to cover digital streaming platforms and will be renamed the Indian Broadcasting and Digital Foundation (IBDF).
Why such a move?
- The move would bring broadcasters and OTT (over-the-top) platforms, which have seen a substantial jump in their viewership base after the pandemic, under one roof.
- For this, the IBDF was in the process of forming a new wholly-owned subsidiary to handle all matters of digital media, an official statement said.
- The IBDF would also form a self-regulatory body, the Digital Media Content Regulatory Council (DMCRC), for digital OTT platforms.
Indian Broadcasting Foundation
- The IBF is a unified representative body of television broadcasters in India.
- The organization was founded in the year 1999. Over 250 Indian television channels are associated with it.
- The organization is credited as the spokesman of the Indian Broadcasting Industry.
- The IBF is the parent organization of the Broadcasting Content Complaints Council (BCCC) which was set up in the year 2011.
- The BCCC examines content-related complaints relating to all non-news general entertainment channels in India.
Note: The IBF has no statutory backing.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Golden visa scheme
Mains level: Not Much
A Bollywood actor has recently received a golden visa from the UAE government.
What is the Golden Visa?
- The Golden Visa system essentially offers long-term residency (5 and 10 years) to people belonging to the following groups: investors, entrepreneurs, individuals with outstanding talents the likes of researchers, medical professionals and those within the scientific and knowledge fields, and remarkable students.
- The main benefit of the visa will be security.
- The UAE government has made it clear that they are committed to providing expatriates, investors and essentially everyone looking to make the UAE their home an extra reason to feel secure about their future.
Who are eligible to apply?
- For the 10-year visa, investors having no less than AED (Dirham) 10 million worth of public investment, either in the form of an investment fund or a company, can apply.
- However, at least 60 per cent of the total investment must not be in the form of real estate and the invested amount must not be loaned, or in case of assets, investors must assume full ownership.
- The investor must be able to retain the investment for a minimum of three years as well.
- The long-term visa can also include the holder’s spouse and children, as well as one executive director and one advisor.
- In addition to the aforementioned, foreign nationals who are looking to set up their business in the UAE may also apply for permanent residency (5 years) through the Golden Business Visa scheme.
Perks for the talent
- Besides entrepreneurs, individuals with specialized talent can also apply for the visa. They include doctors, researchers, scientists, investors and artists.
- These individuals may be granted a 10-year visa following accreditations granted by their respective departments and fields and the visa will also be extended to their spouses and children.
- Exceptional high school and university students are eligible for a 5-year residency visa in the UAE.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Smallpox vaccination in colonial India
Mains level: Not Much
A 19th-century portrait of three women from Mysore has been going viral as “one of the most important scientific pictures in the history of medicine in India”.
What did the portrait depict?
- Believed to be painted in 1805 by Irish-born artist Thomas Hickey, the oil on canvas was initially thought to be portraits of “dancing girls or courtesans”.
- The painting depicted one of the first vaccine drives in India, with bejewelled women from the Wadiyar dynasty posing for Hickey.
- The canvas was commissioned to promote participation in the smallpox vaccination programme and the women posing with the scars.
What is smallpox?
- Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family.
- It was one of the most devastating diseases known to humanity and caused millions of deaths before it was eradicated.
- It is believed to have existed for at least 3000 years.
How and when did the smallpox vaccine reach India?
- The smallpox vaccine, discovered by Edward Jenner in 1796, was the first successful vaccine to be developed.
- On June 14, 1802, Anna Dusthall, an Anglo-Indian toddler, was the first person in India to be successfully vaccinated against the virus that relied on the cowpox virus, “a mild cousin of smallpox” to trigger immunity.
- The “vaccine vesicle” that came on the arm of the receiver was a source of lymphatic fluid or pus that would act as a vaccine, leading to an arm-to-arm immunisation chain.
- The vaccine subsequently travelled to different parts of India, including Hyderabad, Cochin, Madras and Mysore.
How was the drive carried out?
- While the lymph was at times reportedly dried and sealed between glass plates to be transported, it often did not survive long journeys, due to which the British had to primarily rely on a human chain.
- There was also opposition from the domestic population on the introduction of the cowpox virus and also because some believed the goddess of smallpox would be angered by the vaccination.
- With Tipu Sultan defeated in Mysore, and the reinstatement of the Wadiyars, the East India Company was trying to strengthen its position in South India.
- It protected the ex-pat population from an epidemic, making vaccination essential.
- Queen Lakshmi Ammanni, who had lost her husband to smallpox, supported their cause and wanted to vaccine her population against the deadly virus.
- The painting was supposed to encourage participation in the vaccination drive.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Mekedatu Project
Mains level: Cauvery Water Dispute
The National Green Tribunal (NGT), Southern Zone has appointed a joint committee to look into allegations of unauthorized construction activity taking place in Mekedatu, where the Karnataka government had proposed to construct a dam across the Cauvery River.
What is the Mekedatu Project?
- Mekedatu, meaning goat’s leap, is a deep gorge situated at the confluence of the rivers Cauvery and Arkavathi, about 100 km from Bengaluru, at the Kanakapura taluk in Karnataka’s Ramanagara district.
- In 2013, then Karnataka announced the construction of a multi-purpose balancing reservoir project.
- The project aimed to alleviate the drinking water problems of Bengaluru and Ramanagara district.
- It was also expected to generate hydro-electricity to meet the power needs of the state.
Issues with the project
- Soon after the project was announced TN has objected over granting of permission or environmental clearance.
- Explaining the potential for damage to the lower riparian state of TN, it said that the project was in violation of the final award of the Cauvery Water Disputes Tribunal.
- It stated that the project will affect the natural flow of the river Cauvery considerably and will severely affect the irrigation in TN.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Lunar Eclipse
Mains level: Not Much
The Moon will have the nearest approach to Earth on May 26, and therefore will appear to be the closest and largest Full Moon or “supermoon” of 2021.
Tap here to read more about Solar and Lunar Eclipses
What is a Supermoon?
- A supermoon occurs when the Moon’s orbit is closest to the Earth at the same time that the Moon is full.
- As the Moon orbits the Earth, there is a point of time when the distance between the two is the least (called the perigee when the average distance is about 360,000 km from the Earth).
- Also, there is a point of time when the distance is the most (called the apogee when the distance is about 405,000 km from the Earth).
- Now, when a full moon appears at the point when the distance between the Earth and the Moon is the least, not only does it appear to be brighter but it is also larger than a regular full moon.
- According to NASA, the term supermoon was coined by astrologer Richard Nolle in 1979.
- In a typical year, there may be two to four full supermoons and two to four new supermoons in a row.
What is happening today?
- Two celestial events will take place at the same time.
- One is the supermoon and the other is a total lunar eclipse, which is when the Moon and Sun are on opposite sides of the Earth.
- Because of the total lunar eclipse, the moon will also appear to be red.
- This is because the Earth will block some of the light from the Sun from reaching the moon.
- The Earth’s atmosphere filters the light, it will soften “the edge of our planet’s shadow” “giving the Moon a deep, rosy glow.”
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