To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

Earth-like exoplanets might be more common throughout the Milky Way than previously believed, astronomers report in a new ...

Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, ...

From solar probes to deep space missions, these record-breaking human-made objects reached speeds that make bullets and jets ...

Super-Earths, larger planets similar to Earth, are far more common across the universe than scientists previously believed, according to a groundbreaking microlensing study using KMTNet telescopes.

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Meanwhile, astronomers are keeping watch for a rare nova—a sudden explosion of a distant star—that could appear to the naked ...

The Tucson-based Planetary Science Institute is getting new leadership. Amanda Hendrix is taking over as director and CEO from Mark Sykes. He led the research organization for 21 years. Hendrix notes ...

A breathtaking new video compresses more than a decade of deep-space observation into a few seconds, revealing the hypnotic ...

Apr. 3, 2025 — A solar wind event from 2017 that hit Jupiter and compressed ... has been stored in the planet's crust is still unclear, according to a new ... Super-Earths and Mini-Neptunes ...

HERE’S a question: do you know what happens to pee in space? If yes, urine with a chance of nailing this quiz. If not, you ...