Mars’ frozen ice caps may be time capsules for ancient life. Lab experiments show that key building blocks of proteins can survive tens of millions of years in pure ice, even under relentless cosmic ...

But, well before the moon landing, back in 1962, an astronaut called John Glenn got to fly up to space in a rocket, where he saw something that 'he'd never seen anything like' before in his life.

Planned ‘megaconstellations’ of satellites could cause unforeseen harm to the ozone layer and climate systems. Global ...

A baby sunlike star blowing a bubble of hot gas called an “astrosphere” was captured for the first time by NASA’s Chandra X-ray Observatory ...

Some of the universe’s most extreme explosions leave behind almost no trace. The original explosion is unseen, but our ...