Astronomers have found more ORCs in the years since those initial discoveries, and some of them also appear to have a galaxy ...

Gamma-ray bursts (GRBs) are the most energetic events ever observed in the universe. These powerful outbursts can shine a ...

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

Astronomers from Swinburne University in Australia and elsewhere have employed the Keck II telescope to investigate the ...