Location of massive black holes discovered

A research team has discovered that the more massive black holes tend to be located in galactic environments with higher density, thus indicating that galaxies in a dense area often merge together, causing the growth of massive black holes.

Massive black holes shut down star formation

All large galaxies have a massive black hole at their centre, each millions of times the mass of a single star.

Massive black holes found in distant galaxies

The find of supermassive black holes growing in surprisingly small galaxies suggest that central black holes form at an early stage in galaxy evolution.