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  2. Effect of spaceflight on the human body - Wikipedia

    en.wikipedia.org/wiki/Effect_of_spaceflight_on...

    In recent years, there has been an increase in research on the issue of how humans can survive and work in space for extended and possibly indefinite periods of time. This question requires input from the physical and biological sciences and has now become the greatest challenge (other than funding) facing human space exploration. A fundamental ...

  3. Human presence in space - Wikipedia

    en.wikipedia.org/wiki/Human_presence_in_space

    Direct human presence in space was achieved with Yuri Gagarin flying a space capsule in 1961 for one orbit around Earth for the first time. While direct human presence in open space, by exiting a spacecraft in a spacesuit, a so-called extravehicular activity, has been achieved since the first person to do so, Alexei Leonov, in 1965.

  4. Orbital (novel) - Wikipedia

    en.wikipedia.org/wiki/Orbital_(novel)

    In time, however, she stopped worrying about "trespassing in space" and recommenced writing. [ 12 ] [ 13 ] She completed the book in 2020 during the COVID-19 pandemic in the United Kingdom . In an interview, Harvey stated that her goal was to write the novel as a "space pastoral ", focusing on realism and the beauty of space rather than the ...

  5. Space colonization - Wikipedia

    en.wikipedia.org/wiki/Space_colonization

    Yet a third option could be to continually move to stay on the night side, as Mercury's 176-day-long day-night cycle means that the terminator travels very slowly. [ 149 ] Because Mercury is very dense, its surface gravity is 0.38g like Mars, even though it is a smaller planet. [ 148 ]

  6. Seveneves - Wikipedia

    en.wikipedia.org/wiki/Seveneves

    Seveneves is a science fiction novel by Neal Stephenson published in 2015. The story tells of the desperate efforts to preserve Homo sapiens in the wake of apocalyptic events on Earth after the unexplained disintegration of the Moon and the remaking of human society as a space-based civilization after a severe genetic bottleneck.

  7. Planetary habitability in the Solar System - Wikipedia

    en.wikipedia.org/wiki/Planetary_habitability_in...

    Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.

  8. A World Out of Time - Wikipedia

    en.wikipedia.org/wiki/A_World_Out_of_Time

    The Earth's axial tilt is still 23.5 degrees so the poles experience six years of night and six of day. Almost all remaining life has adapted to live in Antarctica. Elsewhere life is extinct except for some evidence of biological activity in the Himalayan mountains.

  9. Space settlement - Wikipedia

    en.wikipedia.org/wiki/Space_settlement

    A space settlement can be the passenger compartment of a large spacecraft for colonizing asteroids, moons, and planets. It can also function as one for a generation ship for travel to other planets or distant stars (L. R. Shepherd described a generation starship in 1952 comparing it to a small planet with many people living in it.) [26] [27]