This event marks the first real-time observation of a black hole transitioning from a quiescent to an active state.

Supermassive black holes are classified as having masses more ... “We expect that instruments like (MUSE on the VLT or those on the upcoming Extremely Large Telescope) will be key in ...

Its supermassive black hole is estimated to be about 1 million ... observations with the VLT's Multi Unit Spectroscopic Explorer (MUSE) and Extremely Large Telescope, among others, and perhaps ...