Mars and the star Regulus delighted stargazers last week when they were seen side-by-side in almost the same brightness but ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

Like Earth, Mars is surrounded by an ionosphere—the part of its upper atmosphere where radiation from the sun knocks ...

A star with a mass similar to our Sun passing within 10,000 astronomical units could disturb Oort Cloud, which is located far ...

The Vera C. Rubin Observatory is expected to find millions of unknown objects in our solar system, and perhaps even a ...

A collage of artist concepts highlighting the novel approaches proposed by the 2025 NIAC awardees for possible future ...

Regulus is a bright blue star in the constellation Leo, which is often called the 'lion's heart'. It regularly appears close ...

Scenes of nebulas in the Milky Way, a cluster of galaxies and thousands of new asteroids are a teaser of how the U.S.-funded ...

NASA/JPL-Caltech/ASU Arsia Mons, one of the Red Planet's largest volcanoes, peeks through a blanket of water ice clouds in this image captured by ...

With a spectacular array of galaxies and nebulas, the ambitious telescope begins its 10-year survey of the cosmos.

The Vera Rubin Observatory is expected to discover 20 billion new galaxies over the next decade. This image shows another ...