dark star

American  

noun

Astronomy.

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

---

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

---

Example Sentences

They can have dark star spots and bright regions, which can create signals that mimic a planet's atmospheric attributes.

From Science Daily • Jan. 9, 2024

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

Observing a dark star directly would be “off-the-charts” amazing, says Pearl Sandick, a theoretical particle physicist at the University of Utah who was not involved in the study.

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

For Digges and Benedetti, even though they were Copernicans, from a vast distance the Earth, which received light but did not transmit it, would become a dark star.

From "The Invention of Science" by David Wootton