Did galaxies or supermassive black holes form first?
Galaxies consist of various astronomical objects, including black holes, planets and stars. At the core of a galaxy lies a […]
supermassive
Andromeda’s supermassive black hole feeding habits revealed by NASA’s Spitzer
These images of the Andromeda Galaxy use data from NASA’s retired Spitzer Space Telescope. The top image shows multiple wavelengths,