Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

There’s something magical about the way snow blankets everything in silence and how ice transforms the ordinary into ...

"Water on a planet this small is a landmark discovery. It pushes closer than ever to characterizing truly Earth-like worlds." When you purchase through links on our site, we may earn an affiliate ...

"This is profoundly different from the composition we see in disks around solar-type stars." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Astronomers have revealed new evidence that not just one, but four tiny planets are circling around Barnard's Star, the ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague? If ...

ST. LOUIS (KTVI) — February’s Snow Moon is this weekend, and the full moon reaches its peak in the early morning hours Saturday. It’s called the Snow Moon because traditionally, heavy snowfall occurs ...