Looking for a really big story, I naturally headed for "Galaxies in Collision." Bradley Whitmore of the Space Telescope Science Institute in Baltimore brought us up to speed. We've known for a ...

Europe's Gaia space telescope was powered down and sent into "retirement" on Thursday after a decade revealing the secrets of the Milky Way, but its observations will fuel discoveries for decades to ...

Sagittarius C is one of the most extreme environments in the Milky Way galaxy. This cloudy region of space sits about 200 light-years from the supermassive black hole at the center of our galaxy.

This is strong evidence that the Fermi cocoon is due to energetic processes occurring in the Sagittarius dwarf galaxy, which from our perspective, is located behind the Fermi bubbles.

This could change, the researchers explain, if Sagittarius A* were to pull in and tear apart a gas cloud, star or even a small dwarf galaxy. These so-called "tidal disruption events" have been ...

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 ...

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.

Our home galaxy is still slowing devouring the Sagittarius dwarf galaxy, Gaia helped reveal. The telescope also spotted more than 50 dwarf galaxies orbiting the Milky Way. Inside the galaxy ...