Astronomers bid an emotional farewell to Gaia, expressing their gratitude for its more than decade-long mission that gave us ...

The Milky Way’s distinctiveness lies in its satellite ... Dark matter haloes are thought to play a crucial role in shaping galaxies by drawing in normal, baryonic matter to form stars and ...

A cosmic anomaly detected in a distant galaxy could portend a terrifying future for life in the Milky Way. The discovery suggests that our models of galactic evolution could be inaccurate.

Gaia has charted the cosmos since 2014, creating a vast encyclopedia of the positions and movements of celestial objects in our Milky Way and beyond. It is difficult to capture the breadth of ...

Ian Randall is Newsweek's Deputy Science Editor, based in Royston, U.K. His focus is reporting on science and health. He has covered archeology, geology, and physics extensively. Ian joined ...