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Science & Tech.
Mahesh

22/07/22 11:37 AM IST

Indigenous Low Earth orbit Technology

In News 
  • Union Minister of State (Independent Charge) Science & Technology; Dr Jitendra Singh said, ISRO is in the process of developing indigenous capabilities towards space tourism through the demonstration of human space flight capability to Low Earth Orbit (LEO).
About LEO
  • A low Earth orbit (LEO) is, as the name suggests, an orbit that is relatively close to Earth’s surface.
  • It is normally at an altitude of less than 1000 km but could be as low as 160 km above Earth – which is low compared to other orbits, but still very far above Earth’s surface.
  • By comparison, most commercial aeroplanes do not fly at altitudes much greater than approximately 14 km, so even the lowest LEO is more than ten times higher than that.
  • It is the orbit most commonly used for satellite imaging, as being near the surface allows it to take images of higher resolution.
  • It is also the orbit used for the International Space Station (ISS), as it is easier for astronauts to travel to and from it at a shorter distance.
  • Satellites in this orbit travel at a speed of around 7.8 km per second; at this speed, a satellite takes approximately 90 minutes to circle Earth, meaning the ISS travels around Earth about 16 times a day. 
Source- PIB 

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