Astronaut physiology

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Astronaut: a man or woman whose job it is to fly in space. Astronauts are usually really good at math and science, and aren't scared of sitting on top of rockets.

Gravity: the attraction of one body to another. Gravity gives objects weight and causes them to fall to the ground if dropped... more

Going Back to Gravity

Astronaut getting carried after returning to Earth

Astronaut Paolo Nespoli being carried after returning to Earth from his mission, Sojuz TMA-20, to the International Space Station.

With all the changes that an astronaut’s body experiences in space, it’s surprising they can get used to their new conditions so quickly. Luckily, the body is also good at adjusting to life back on Earth.

Once an astronaut returns to Earth, gravity immediately starts to affect their bodies again. Though they may need to be carried off the ship, pretty soon everything starts to get back to normal.

Blood and fluids soon move normally around the body, and with training and practice, the astronauts will regain their muscle and bone strength before too long. Though they can’t tumble through the air as freely here on Earth, we can imagine that the familiar force of gravity must feel pretty good.

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Bibliographic details:

  • Article: Going Back to Gravity
  • Author(s): Amy Shira Teitel
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: December 8, 2011
  • Date accessed: May 16, 2024
  • Link:

APA Style

Amy Shira Teitel. (2011, December 08). Going Back to Gravity. ASU - Ask A Biologist. Retrieved May 16, 2024 from

American Psychological Association. For more info, see

Chicago Manual of Style

Amy Shira Teitel. "Going Back to Gravity". ASU - Ask A Biologist. 08 December, 2011.

MLA 2017 Style

Amy Shira Teitel. "Going Back to Gravity". ASU - Ask A Biologist. 08 Dec 2011. ASU - Ask A Biologist, Web. 16 May 2024.

Modern Language Association, 7th Ed. For more info, see
Shuttle Discovery

After a trip in space, all astronauts have to return to earth and gravity. Here, a NASA Space shuttle lands after a mission in space.

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