Stars pepper Gaia’s all-sky view of our Milky Way Galaxy and neighboring galaxies in this image based on the measurement of nearly 1.7 billion stars.

Related: 4 big Milky Way mysteries the next Gaia mission data dump may solve. The June 13 data release is set to supercharge this research as it contains new, previously unavailable information.

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

The Milky Way just got a little more crowded. The European Space Agency’s Gaia spacecraft has mapped more than a billion stars in the galaxy with unprecedented accuracy and detail — and it has ...

Although Gaia has been scanning the Milky Way since 2014, there is still a lot astronomers don't understand about the galaxy. Studying our galactic home is not an easy task.

An artist's impression of ESA's Gaia satellite observing the Milky Way. The background image of the sky is compiled from data from more than 1.8 billion stars.

Comet 31/ATLAS is only the third interstellar object to ever be observed whizzing through the Solar System. While its origins ...

This is Gaia's third big data delivery since it launched in 2013. Spacecraft: ESA/ATG medialab; Milky Way: ESA/Gaia/DPAC; CC BY-SA 3.0 IGO. Acknowledgement: A. Moitinho.

ESA’s Gaia is on a mission to create the most accurate 3D map of the Milky Way to date. Illustration: ESA/Gaia/DPAC Start Slideshow The European Space Agency’s Gaia observatory has just ...

The Gaia mission of the European Space Agency (ESA) has officially ceased its scientific operations after 12 years of service. This spacecraft, dedicated to mapping the Milky Way, has exhausted its ...

The European Space Agency's Milky Way-mapper Gaia has completed the sky-scanning phase of its mission, racking up more than 3 trillion observations of about 2 billion stars and other objects over ...

We are not alone—at least as a galaxy. About 50 dwarf galaxies surround the Milky Way.But when its intense gravity inevitably draws them to venture too close, they will probably be annihilated.