What is a black hole and can it affect Earth?
The largest known black hole in the Milky Way, excluding the supermassive black hole residing at the centre of our galaxy, has been found by London astronomers. Its mass is around 33 times that of the sun.
Researchers said on Tuesday that the recently discovered black hole has a companion star orbiting it and is situated in the constellation Aquila at a distance of roughly 2,000 light-years from Earth, or rather near in cosmic terms.
Pasquale Panuzzo, a research engineer at the French research agency CNRS working at the Observatoire de Paris, said: "This black hole is not only very massive, it is also very
