It can be hard to get your head around the fact that Earth is moving through space. But it is even stranger to realize that you are making two simultaneous journeys — around the sun and through the ...

Researchers using the Gaia space telescope studied some ancient stars near the sun, revealing that our corner of the Milky Way may be billions of years older than once thought. When you purchase ...

A long-standing scientific belief holds that stars tend to hang out in the same general part of a galaxy where they originally formed. Some astrophysicists have recently questioned whether that is ...

The interstellar object 3I/ATLAS may be older than the Sun. Scientists are analysing its composition, origin, and rare ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

Astronomers have directly observed a free-floating planet, comparable in mass to Earth, roaming the Milky Way. Discovered via ...

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...