The cosmos is a void dotted with stars and an ever-increasing number of newly-observed planets beyond our solar system. Yet, how these stars and planets formed out of clouds of interstellar dust and ...

Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

Some planets might produce their own water instead of relying on outside sources. In laboratory experiments, researchers simulated extreme conditions found within certain exoplanets by blasting ...

(CNN) — The first experiment to produce oxygen on another planet has come to an end on Mars after exceeding NASA’s initial goals and demonstrating capabilities that could help future astronauts ...

Most people know the difference in appearance between a star and a planet. They'll tell you that stars twinkle while planets don't. And that's largely correct. Stars are so far away that they look ...

New experimental research demonstrates that sub-Neptune exoplanets, the most common class discovered, could possess large quantities of liquid water. The study simulated early planetary conditions, ...

Dark matter remains frustratingly elusive. We have not seen any direct detection in any of our laboratory experiments, and at cosmic scales we only have circumstantial evidence that it exists. Now, a ...

The solar system's eight planets will never truly be in a straight line, but they can get close to it. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...