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.

Astronomers find elliptical galaxy with split-personality

Astronomers have discovered that a well-known elliptical galaxy has a split personality.

Dark matter mass in our galaxy `20% larger than projected`

The distance from the solar system to the galactic center is approximately 26,100 light-years, and the galactic rotation velocity in the solar system (V0) is approximately 240 km/s.