International Space Agencies – Missions and Discoveries

25 years of the International Space Station (ISS)

Note4Students

From UPSC perspective, the following things are important :

Prelims level: International Space Station (ISS)

Mains level: Not Much

International Space Station

Central Idea

  • This 20th November marked the 25th anniversary of the launch of the International Space Station (ISS), the largest man-made object in the solar system.
  • Since its launch on November 20, 1998, the ISS has stood as a testament to the power of international cooperation and has space research.

About the International Space Station (ISS)

  • Orbital Marvel: The International Space Station (ISS), orbiting 430 kilometers above Earth, completes 16 orbits daily, witnessing 16 sunrises and sunsets.
  • Speed: The ISS orbits Earth every 90 minutes at 8 kilometers per second.
  • Size: Spanning 109 meters, it’s almost as long as an American football field.
  • Living Quarters: The ISS includes 6 sleeping areas, two bathrooms, a gym, and a panoramic view bay window.
  • Solar Array and Wiring: Its solar array wingspan is 109 meters, and the station houses about 13 kilometers of electrical wiring.

Inception and Key Milestones

  • Launch of Zarya: The ISS’s journey began on November 20, 1998, with Russia’s Zarya Control Module.
  • Unity Node 1: The U.S. added the Unity Node 1 module on December 4, 1998, marking the start of a functional space lab.
  • 42 Assembly Flights: The station evolved into its current form after 42 assembly flights.
  • Continuous Habitation: Since its inception, the ISS has been continuously inhabited, hosting astronauts from various countries for groundbreaking research.

Key Activities

  • Scientific Research: Astronauts conduct unique experiments, leading to significant discoveries.
  • Spacewalks and Maintenance: Regular spacewalks are essential for station upgrades and repairs.
  • Health Regimen: Astronauts follow strict routines to combat muscle and bone loss in microgravity, providing valuable data for future space missions.

Scientific Contributions

  • Medical Advances: Research on the ISS has enhanced our understanding of diseases like Alzheimer’s and cancer.
  • Drug Development: Space research has expedited drug development processes.
  • Technological Innovations: Innovations in water purification and food production have emerged from ISS experiments.

Future of the ISS

  • Current Uncertainties: The Russia-Ukraine conflict in 2022 casts doubt on the ISS’s future.
  • Global Space Ambitions: Countries like Japan, China, and India are aiming for independent space capabilities.
  • Continued Commitment: The US and Europe plan to support the ISS through 2030, with NASA focusing on lunar exploration and ESA developing the Starlab space station.

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