Muscle Atrophy: In microgravity, the muscles do not have to support the body’s weight, leading to significant muscle weakening. Astronauts typically lose about 1% of muscle mass per month. For example ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

The astronauts will be checked out by flight surgeons as they adjust to gravity, officials said, and should be allowed to go ...

Supernovas are powerful explosions marking the death of massive stars. They spread elements like carbon, calcium, and iron ...

Two of Earth’s five confirmed mass extinction events could have been caused by nearby supernova explosions stripping the ...

NASA astronauts Suni Williams and Butch Wilmore are back on Earth after 286 days in space. Former astronaut and ISS commander ...

Nine months after departing for the International Space Station on a planned week-long trip, two American astronauts have ...

The End-Permian mass extinction killed an estimated 80% of life on Earth, but new research suggests that plants might have ...

About 252 million years ago, 80 to 90 percent of life on Earth was wiped out. In the Turpan-Hami Basin, life persisted and ...

A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.

By Dionne Meehan  A LETTERKENNY man who tragically lost his life in a collision on St. Patrick’s Day was remembered as “the ...

Two astronauts, including Massachusetts native Suni Williams, are on their return trip to Earth on Tuesday aboard a SpaceX capsule.