Our neighbouring black hole - Skywatching

Our neighbouring black hole - Skywatching

Black holes are rather menacing objects. Stars, planets, dust and any other material getting too close fall in. There is an intense flash of radiation and nothing comes back out. There are black holes with masses millions of times that of the sun at the centres of galaxies like ours. There are lots of less massive and much smaller black holes around, formed during the final collapse and explosion of dying massive stars. Astronomers believe there are about 100 million …