Four-and-a-half billion years ago, a massive world—possibly as big as the moon or even Mars—orbited our sun before crashing ...

A rare meteorite discovered in the Sahara Desert proves that our solar system almost had at least one extra planet. In a ...

The Planetary Science and Astrobiology Decadal Survey 2023-2032 will assess key scientific questions in planetary science and astrobiology, identify priority medium- and large-class missions and other ...

The Committee on Astrobiology and Planetary Science (CAPS) provides an independent, authoritative forum for identifying and discussing issues in astrobiology and planetary science with the research ...

Earth as we know it offers majestic trees, meandering streams, and rolling hills. Yet below the Earth's surface, forces and elements like intense pressure and scalding magma simmer and stew—and make ...

1 computer optical disc in pocket. 'In recent years, planetary science has seen a tremendous growth in new knowledge. Deposits of water ice exist at the Moon's poles. Discoveries on the surface of ...

Rep. Judy Chu (D-Calif.), one of the co-chairs of the Planetary Science Caucus, speaks at a March 5 event about the relaunched caucus. Credit: SpaceNews/Jeff Foust WASHINGTON — As NASA’s planetary ...

There are more opportunities to access space than ever, thanks to a bevy of commercial rockets, some with reusable boosters, led by SpaceX’s workhorse Falcon 9. So why is NASA launching fewer ...

Earth's Moon, a constant companion for billions of years, profoundly shapes our planet. It drives ocean tides, stabilizes ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational wave signal from a binary black hole merger to date, and it gives researchers ...

This poll is now closed. Results to come soon, stay tuned! In our September 2025 issue, astronomer and Pluto mission leader S. Alan Stern explores how the field of planetary science has transformed ...

One of the co-chairs represents the Democratic Party and the other represents the Republican Party. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...