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

We can judge the value of any scientific endeavour based on how much of our knowledge it overturns or transforms.

Artistic representation of the current interaction between the Sagittarius dwarf galaxy and the Milky Way. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...

They have identified dwarf galaxies and pinpointed when they made contact with our galaxy, including Gaia-Enceladus about 9 billion years ago and the Sagittarius Dwarf Elliptical Galaxy roughly 7 ...

Scientists have investigated the properties of globular clusters (GCs) to identify those belonging to the tidal stream of the Sagittarius dwarf spheroidal galaxy (Sgr dSph), a satellite galaxy to ...

The closest known galaxy to Earth is the Canis Major Dwarf Galaxy, at 25,000 light years from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest, at 70,000 light years from the Sun.

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...