In outer space, even though all the masses in the Universe gravitate just as normal, there is no ‘up’ or ‘down’ as there is on Earth, as the spacecraft and everyone on board accelerates due to gravity at the same rate. Image credit: NASA / ESA / ISS Expedition 37.

Why Don’t We Have Artificial Gravity In Space?

All sorts of futuristic technologies have come true. So why are astronauts all still weightless?

Ethan Siegel
Oct 26, 2017 · 6 min read

Put a human being up in space, away from the gravitational bonds of the surface of the Earth, and they’ll experience weightlessness. Although all the masses in the Universe are still pulling on them gravitationally, they pull…