The ESA’s Gaia mission mapped the positions and velocities of stars with extreme precision by measuring about one billion ...

Astronomers have discovered 'Bullseye,' a record-breaking galaxy with nine rings—six more than any other known galaxy.

If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a ...

The Gaia telescope aimed to create an accurate and detailed 3D map of billions of stars in our galaxy. Its findings have flipped astronomers' understanding of the Milky Way on its head and have led to ...