Newfound rocks on Mars suggest the planet may have once sported an oxygen-rich atmosphere, making it more Earth-like and ...

Astronauts who explore Mars should be careful not to leave too heavy of a footprint, experts stress. Indeed, human ...

C.26 Rapid Mission Design Studies for Mars Sample Return (RASMSR) solicits industry proposals to carry out rapid studies of ...

Near the moon's south pole lies a 13-mile wide, 2.5-mile-deep crater known as Shackleton, named for Antarctic explorer Ernest ...

Ever wonder what happens when you fall into a black hole? Now, thanks to a new, immersive visualization produced on a NASA ...

Henk Hoekstra is a professor in observational cosmology at Leiden University.