A new study reveals a hidden risk for Mars missions: astronauts could lose strength even if muscle size stays the same.

That’s exactly what a study published today in Science Advances sought to do. The researchers exposed mice aboard the ISS to ...

The study conducted by an international team of astronomers exposed mice to different levels of gravity in the orbital laboratory.

Humans did not evolve for space. Ironically, because we insist on going there anyway, scientists now know from studying ...

The space-faring mice spent about 28 days in those conditions before returning to Earth in April. Mortreux and her colleagues then analyzed the weight, strength and movement of the 23 surviving ...

Videos of astronauts on the Moon show them often bouncing across the lunar surface, helped by the fact that the gravity of our satellite is just one-sixth of Earth’s surface gravity. That experience ...

It's well known that spaceflight causes muscle atrophy and other biological changes in reduced gravity, and especially in ...

The Red Planet's low gravity and lack of magnetic field makes its outermost atmosphere an easy target to be swept away by the solar wind, but new evidence from ESA's Mars Express spacecraft shows that ...

Mars has less gravity and possesses and eccentric solar orbit, making it difficult to calculate time differences. For all intents and purposes, humans on Earth experience time uniformly. One hour in ...