The Big Wheel galaxy formed just 1.7 billion years after the Big Bang, at a time when the universe was only 15% of its current age.

After more than a decade of charting the stars with extraordinary precision, the Gaia spacecraft has completed its mission.

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

The European Space Agency announced Thursday the Gaia spacecraft was turned off after a decade of data gathering.

The mission uncovered evidence of past galactic mergers, identified new star clusters, contributed to the discovery of exoplanets and black holes, mapped millions of quasars and galaxies ...

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

The European Space Agency has released its first tranche of data from the Euclid space telescope's mission to map the ...

The European Space Agency (ESA) has officially retired its Gaia spacecraft, after over ten years of data collection on our ...

Astronomers have long envisioned how vast gravitational forces between galaxies and galactic clusters, colossal cosmic assemblies bound by dark matter, drive their growth through mergers and ...