The Hubble Space Telescope's evidence of an "intermediate-sized" black hole about 6000 light-years away in the closest ...

A recent collaboration between NASA’s Hubble Space Telescope and Chandra X-ray Observatory has resulted in the discovery of a rare intermediate-mass black hole (IMBH) located in the distant NGC 6099 ...

A newly detected X-ray transient may reveal the first direct evidence of an intermediate-mass black hole consuming a white dwarf. A newly observed cosmic outburst is giving astronomers a rare glimpse ...

Astronomers have analyzed the images collected by the Hubble Space Telescope (HST) to investigate a galactic open cluster ...

NASA's Hubble Space Telescope and NASA's Chandra X-ray Observatory have teamed up to identify a new possible example of a rare class of black holes. Called NGC 6099 HLX-1, this bright X-ray source ...

Deep inside a dust-choked galaxy, astronomers have uncovered a chemical environment far more complex than expected.

The galaxy NGC 941 was imaged by the Subaru Telescope at the summit of Maunakea, Hawai'i.

Add Yahoo as a preferred source to see more of our stories on Google. This artist’s illustration depicts the longest gamma ray burst ever detected, GRB 250702B (left of center), erupting within its ...