Gaia has completed the mapping phase of its mission. Since its launch in 2013, the European Space Agency’s Gaia spacecraft has been charting our galaxy one star at a time. In those years, Gaia ...

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The European Space Agency’s Gaia mission has discovered a massive black hole with a mass almost 33 times that of the Sun. Normally they’re only found in very distant galaxies not in our celestial ...

After more than a decade of service, the European Space Agency’s Gaia spacecraft has been powered down for good—closing one of the most transformative missions in the history of space exploration.

There are probably 200 billion stars in the Milky Way, stretched across space in a disk shaped like a ninja’s throwing star. It’s so big that, traveling at the speed of light, it’d still take you ...

Today astronomers are saying goodbye to a remarkable spacecraft: a telescope that has observed nearly two billion stars in its 12-year life. The Gaia Observatory from the European Space Agency (ESA) ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. You’ve probably heard of space telescopes like Hubble and the James Webb. They’re famous for giving us breathtaking ...

Milky Way stars that are high and low in metallicity have been mapped by the ESA Gaia mission. [Gaia spacecraft: Mapping the Milky Way like never before. Credit: ESA/Gaia/DPAC ...

The latest data release from the European Space Agency’s Gaia observatory just dropped, and it’s a massive one: the spacecraft has identified half a million stars in a nearby cluster, nearly 400 ...