Quasar, Quasar, Burning Bright is a collection of seventeen scientific essays by American writer and scientist Isaac Asimov.

It was the thirteenth of a series of books collecting essays from The Magazine of Fantasy and Science Fiction.

These essays were first published between May 1976 and September 1977.

It was first published by Doubleday & Company in 1978.

Its title is derived from the first line of William Blake's 1794 poem "The Tyger".