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companion star

American  

noun

Astronomy.
  1. companion.


Etymology

Origin of companion star

First recorded in 1775–85

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While observing a repeating FRB roughly 2.5 billion light-years from Earth, researchers detected a unique signal that pointed to the presence of a nearby companion star.

From Science Daily

"One natural explanation is that a nearby companion star ejected this plasma," explained Professor Bing Zhang.

From Science Daily

Astronomers analyzing fresh observations from NASA's Hubble Space Telescope and several ground-based observatories have uncovered clear signs that a recently identified companion star is shaping the environment around Betelgeuse.

From Science Daily

These long-term observations revealed the effects of a companion star that had previously been suspected but not confirmed.

From Science Daily

These patterns provided strong evidence of the long-suspected companion star and revealed how it affects the red supergiant's outer atmosphere.

From Science Daily