'Astronomers think the Andromeda Spiral may have one of these collapsed stars at its center'
Black hole
THE UNIVERSE: Astronomers think the Andromeda Spiral may have one of these collapsed stars at its center
Astronomers think the Andromeda Spiral may have one of these collapsed stars at its center
Astronomers think the Andromeda Spiral may have one of these collapsed stars at its center
THE UNIVERSE
Black hole
THE UNIVERSE