Europe's star-mapping Gaia space observatory has entered its retirement orbit, after gathering valuable cosmic data for more ...

The new images, to be presented at an upcoming meeting of the American Physical Society, date back to when the universe was ...

"Could our galaxy one day experience similar high-energy phenomena that will have serious consequences for the survival of ...

The Atacama Cosmology Telescope (ACT) team has captured the clearest images of the universe in its earliest stages—when it ...

The final messages sent to Gaia will continue to be carried out into space as the observatory sleeps, and as data from it ...

The Milky Way appears as a red band in the half-sky view. Analyzing this cosmic microwave background in high definition has ...

Astrophysicists have teased a hellish potential future in which life on Earth is extinguished by deadly radiation from the ...

After more than a decade of mapping the stars, the European spacecraft was shut down on Thursday. But its legacy lives on.