red dwarf
noun
: a star having substantially lower surface temperature, intrinsic luminosity, mass, and size than the sun
Examples of red dwarf in a Sentence
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Emitting little to no visible light, the pair of brown dwarfs Bab is around 1,000 times fainter than their parent binary red dwarfs and can only be observed in infrared.
—
Robert Lea, Space.com, 22 Aug. 2025
The problem with hunting for planets orbiting a G2 star is the same reason that most exoplanets have been found swinging around red dwarfs.
—David Szondy
august 14, New Atlas, 14 Aug. 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
And the star and its two companions, the slightly smaller Alpha Centauri B and the tiny red dwarf star Proxima Centauri, comprise the nearest stellar system to our own—just about four and a half light-years away.
—Meghan Bartels, Scientific American, 7 Aug. 2025
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Robert Lea, Space.com, 22 Aug. 2025
The problem with hunting for planets orbiting a G2 star is the same reason that most exoplanets have been found swinging around red dwarfs.
—David Szondy
august 14, New Atlas, 14 Aug. 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
And the star and its two companions, the slightly smaller Alpha Centauri B and the tiny red dwarf star Proxima Centauri, comprise the nearest stellar system to our own—just about four and a half light-years away.
—Meghan Bartels, Scientific American, 7 Aug. 2025
See All Example Sentences for red dwarf
Cite this Entry
“Red dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20dwarf. Accessed 9 Sep. 2025.
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