Astronomers may have discovered the fastest-moving planet system ever found, moving through our galaxy at speeds of at least ...

Astronomers have been able to image gas as it travels down a 3 million light-year-long cosmic highway between two growing ...

Possibly one of the best-known constellations in the northern sky, Ursa Major—or the Great Bear—contains an asterism of seven ...

Quipu, Hercules, Serpens–Corona Borealis and Sculptor–Pegasus are all larger than the fifth and final superstructure ...

The cosmic superstructure Quipu is more than 13,000 times the length of the Milky Way, and its mass is 200 quadrillion times ...

Enabled by supercomputing, University of Pretoria (UP) researchers have led an international team of astronomers that has ...

"These two supernova remnants are helping us to better understand the dynamics of our home galaxy’s neighborhood," ...

These are known as hypervelocity stars, with some moving faster than the escape velocity of the Milky Way of around 600 kilometers (373 miles) per second. There is another star that is almost as ...

The Milky Way can be seen as something of a bully, having devoured many smaller galaxies to achieve its vast mass, and ...

The Hubble Space Telescope’s latest stunning images have allowed scientists to solve the mystery of the Bullseye Galaxy’s plentiful rings.

Astronomers may have found a star racing through our galaxy at an incredible speed—dragging a planet along with it! If ...

This artist's concept visualizes stars near the center of our Milky Way galaxy. Each has a colorful trail indicating its speed –– the longer and redder the trail, the faster the star is moving. NASA ...