A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's ...

How galaxies assemble their stars and grow over billions of years remains one of the central questions in astronomy. Recent ...

New simulations reveal that the Milky Way’s odd split between two chemically distinct groups of stars isn’t a universal ...

On Dec. 15, 1612, the Andromeda galaxy was seen through a telescope for the first time by a German astronomer named Simon Marius. [‘On This Day in Space’ Video Series on Space.com] The Andromeda ...

“Observing the Galaxy is like standing in the middle of a brightly lit city at night. If you look toward the outskirts, the view is clearer – you can make out individual streets, scattered houses, and ...

Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025 ...

NASA's Nancy Grace Roman Space Telescope team has released detailed plans for a major survey that will reveal our home galaxy ...

NASA’s Europa Clipper spacecraft has observed interstellar comet 3I/ATLAS, collecting rare data as the ancient object made ...

This interstellar vagabond is only the third large interstellar visitor that we have ever discovered — an asteroid or comet ...

The Milky Way looks serene from our vantage point, a hazy river of light arcing across the night sky. Yet the stars that make ...

Interstellar comet 3I/ATLAS will fly by our planet at a safe distance of 1.8 astronomical units (roughly 167 million miles or ...