A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

The Hubble Space Telescope has used its sensitive instruments to create a mosaic image containing 2.5 billion of the Milky Way's closest neighbor.

The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with ...

Soon, the Gaia spacecraft will leave orbit and begin its retirement in the depths of space. In the last 10 years, it has ...

The Milky Way has more than 150 known globular clusters; these objects are excellent tools for studying, for example, the history of the Universe, or the dark matter content of the galaxies they orbit ...

There’s plenty of action at the center of the galaxy, where a supermassive black hole (SMBH) known as Sagittarius A* (Sgr A*) literally holds the galaxy together. Part of that action is the creation ...

The intrepid mapping mission has collected more than three trillion observations that'll change the way we see our neck of ...

The European Space Agency's Milky Way-mapper Gaia has completed the sky-scanning phase of its mission, racking up more than 3 ...

Goodnight Gaia. The European Space Agency star-tracking satellite ceased operations on Wednesday, Jan. 15, 2025, after 12 ...