The International Space Station (ISS) is a large space laboratory and living habitat orbiting Earth in low Earth orbit. It is a joint project among several countries and is the largest, most complex orbiting space station, continuously inhabited by astronauts and cosmonauts.
History and Collaboration
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The ISS program began in 1998.
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Key partners include NASA (USA), Roscosmos (Russia), ESA (European Space Agency), JAXA (Japan), and CSA (Canada).
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The station was assembled in orbit from many modules launched by different countries.
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It has been continuously inhabited since November 2000.
Structure and Composition
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The ISS consists of living quarters, laboratories, solar panels, and external equipment.
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It weighs over 400 tons.
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Dimensions: about 72.8 meters long and 108.5 meters wide (including solar arrays).
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Solar panels provide all the station’s power.
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It has multiple docking ports for spacecraft like Progress, Dragon, and Soyuz.
Purpose and Objectives
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To study the effects of long-duration spaceflight on the human body.
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To conduct scientific experiments in microgravity (biology, physics, chemistry, materials science, and more).
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To continuously observe Earth and space.
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To test new space technologies.
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To foster international cooperation and peaceful exploration of space.
Crew and Living Conditions
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Typically, 3 to 10 crew members live on the ISS at a time, usually rotating every 6 months.
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Crew members conduct research, maintain the station, rest, and perform physical exercise.
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Life support systems provide air, water, food, and power to ensure comfortable living conditions.
Interesting Facts
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The ISS orbits Earth at about 28,000 km/h (17,500 mph), completing one orbit roughly every 90 minutes.
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It has been the main base for human space activity for over 20 years.
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The ISS has contributed greatly to advancing space science and technology.