Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.

Scientists are keen to get to the bottom of the dark matter puzzle because this phenomenon accounts for the vast majority of the "stuff" in the universe — about 85%, in fact. That means everything we ...

He adds, "This work provides the first detailed measurements of the magnetic fields in the Milky Way's X-ray emitting halo and uncovers new connections between star-forming activities and galactic ...

A new study claims to have discovered about 200 ancient stars in the Milky Way’s halo, the most ... [+] distant of which is more than a million light-years from Earth. That’s almost half the ...

This illustration shows the Milky Way galaxy's inner and outer halos. A halo is a spherical cloud of stars surrounding a galaxy. Disclaimer: AAAS and EurekAlert! are not responsible for the ...

Physicists have proposed a solution to a long-standing puzzle surrounding the GD-1 stellar stream, one of the most well-studied streams within the galactic halo of the Milky Way, known for its ...

This stunning image of NGC 6951 is captured by NASA's Hubble Telescope. It is a barred spiral galaxy located in the constellation Cepheus. It is located at a distance of about 75 million light-years ...

According to a new study, our Milky Way galaxy may have already begun colliding ... Although it was already known that the halo of gas surrounding the stars in a galaxy accounts for about 70% ...

When you point a telescope toward the Pegasus constellation, you can discover a scene where the Milky Way stars and distant galaxies unfold. NGC 7814, located in the center, occupies an area that ...