Pair instability supernovae are popularly thought to be highly luminous.

Quasars are believed to be the highly luminous cores of galaxies in an early stage of their development.

A quasar, or quasi-stellar object, is a highly luminous phenomenon believed to exist at the center of a galaxy.

The progenitor may have been a highly luminous yellow supergiant with an initial mass of 18-24 solar masses.

Eta Carinae is a highly luminous hypergiant star.

Initial observation of a highly luminous star is insufficient for it to be defined as a hypergiant.

Luminous blue variables are a class of highly luminous hot stars that display characteristic spectral variation.

It is highly luminous, and is unstable, periodically throwing off shells of materials.

These hot, highly luminous stars are unlikely to be more than 50 million years old, a hundredth of the Sun's age.

The explosion results in a highly luminous burst of radiation that then dims over the course of weeks or months.