dark star

American  

noun

Astronomy.

1. an invisible member of a binary or multiple star system.

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dark star British  

noun

1. an invisible star known to exist only from observation of its radio, infrared, or other spectrum or of its gravitational effect, such as an invisible component of a binary or multiple star

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Example Sentences

See Examples For:

dark star

This could be the outcome of a merger, where a dark matter halo hosting a dark star merges with a galaxy.

From Science Daily ● Oct. 14, 2025

When its dark matter power source gives out, a dark star would quickly collapse into a 1-million-solar-mass black hole—a perfect large seed ready to be adopted by a nearby protogalaxy.

From Science Magazine ● Aug. 22, 2023

The “smoking gun” for a dark star would be a particular hiccup in the electromagnetic spectrum where light is absorbed by a particular isotope of helium only in dark stars, not in galaxies.

From Scientific American ● Jul. 20, 2023

“The Book of Unconformities” is a consummately “unstable and intimate energy-space,” and among the most mysterious books I’ve ever read — a dense, dark star.

From New York Times ● Sep. 22, 2020

Stellato and Digges were not the only ones to think of the Earth as a dark star.

From "The Invention of Science" by David Wootton