Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

Star formation in the early universe was a vigorous process that created gigantic stars. Called Population III stars, these ...

Star formation in the early Universe was a vigorous process that created gigantic stars. Called Population 3 stars, these giants were massive, extremely luminous stars, that lived short lives, many of ...

ABSTRACT We present photometric and spectroscopic observations of SN 2000ch, an unusual and extremely luminous variable star located in the galaxy NGC 3432. The object was discovered on 2000 May 3.2 ...

Generally, the most luminous quasars are just indications of the fastest-growing supermassive black holes lurking in space. “We have discovered the fastest-growing black hole known to date.