Space Exploration Stack Exchange
Space Exploration Stack Exchange

Questions tagged [microgravity]

Questions regarding the absence of significant gravitational force.

156 questions
8
votes
7 answers

Is there a change in altitude when "falling around earth"?

This just blew me away: What Is Microgravity? The page says the reason astronauts (in the International Space Station, ISS) experience microgravity is not because they're in "space" but because they're falling. Gravity at the ISS altitude is 90% of…
Rodo
  • 859
  • 4
  • 20
7
votes
2 answers

How do astronauts maintain their neck muscles?

The human head weighs 5kg. This weight keeps the neck toned and strong. In zero gravity on extended missions how do astronauts maintain muscle and bone strength in their necks? What type of neck exercises do they perform?
Bruffy
  • 329
  • 1
  • 6
6
votes
3 answers

Is it possible to simulate Mars gravity on Earth?

Can you use an aircraft to simulate Mars gravity on Earth, similar to the way weightlessness is simulated by fling in a parabolic arc? What would the flight profile have to look like to achieve mars gravity? I know the acceleration required to…
FlyBox
  • 81
  • 3
4
votes
2 answers

Does swimming experience help to adapt to weightlessness?

In the story I currently write, I have a character who has been a passionate swimmer for decades. Now, she goes to space. I wonder how she would adapt to weightlessness, and would her swimming experience help?
Krišjānis Liepiņš
  • 191
  • 3
2
votes
3 answers

Can a human body change direction when floating in a space without gravity?

Suppose I am in the center of a hypothetical 4mx4m room and there is no gravity. I am wearing a spacesuit with no means of propulsion (e.g. venting, ejecting, etc..). Would I be able to reach "the door", i.e. start movement in a certain direction,…
Yaza Fatutu
  • 21
  • 2
0
votes
2 answers

in microgravity do you need fuel to continue same velocity?

To be more specific: Suppose a space station is orbiting in a cislunar orbit (about 1000 miles away from the Moon). Now you keep adding more mass (huge cargo) to the cislunar space station. The space station departs for Mars with that huge cargo…
DRSD
  • 33
  • 3
-2
votes
3 answers

Do astronauts feel their weight in orbit?

Will astronauts in space stations such as the International Space Station which orbits the Earth feel their weight?
Hash
  • 18,015
  • 13
  • 68
  • 147