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Spaceflight (or space flight) is an application of astronautics to fly objects, usually spacecraft, into or through outer space, either with or without humans on board.Most spaceflight is uncrewed and conducted mainly with spacecraft such as satellites in orbit around Earth, but also includes space probes for flights beyond Earth orbit.
Space medicine is a developing medical practice that studies the health of astronauts living in outer space. The main purpose of this academic pursuit is to discover how well and for how long people can survive the extreme conditions in space, and how fast they can re-adapt to the Earth's environment after returning from space.
[80] [81] In the first 28 U.S. Space Shuttle flights (2–11 d duration), serum insulin levels (n = 129) were elevated by 55% on landing day compared to before flight. [82] Russian space life science investigators reported two-fold or greater increases in insulin levels in three cosmonauts within 1 day after they returned from a 237-d flight. [83]
A sub-orbital spaceflight is a spaceflight in which the spacecraft reaches outer space, but its trajectory intersects the surface of the gravitating body from which it was launched. Hence, it will not complete one orbital revolution, will not become an artificial satellite nor will it reach escape velocity .
Space exploration is the use of astronomy and space technology to explore outer space. [1] While the exploration of space is currently carried out mainly by astronomers with telescopes , its physical exploration is conducted both by uncrewed robotic space probes and human spaceflight .
Space and survival – Idea that spacefaring is necessary for long-term human survival; Space vehicle – Combination of launch vehicle and spacecraft Launch vehicle – Rocket used to carry a spacecraft into space; Spacecraft – Vehicle or machine designed to fly in space; Spaceflight – Flight into or through outer space
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Space Shuttle Endeavour: Kennedy LC-39B United Space Alliance STS-47: NASA Low Earth Microgravity: 20 September: Successful Spacelab Long Module 2 NASDA/NASA Low Earth (Endeavour) Spacelab-J: Crewed orbital flight with seven astronauts; 50th mission of the Space Shuttle programme: 22 September 16:10 Soyuz-U Plesetsk Site 16/2 VKS Kosmos 2210 ...