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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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.
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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
Illustration: Getty Images A team of astronomers from the University of Montreal has discovered a new potentially habitable exoplanet orbiting the red dwarf star L 98-59, 35 light-years from Earth.
—Jorge Garay, Wired News, 28 July 2025
Located about 35 light-years from Earth, L 98-59 is a cool, dim red dwarf star already known to host a compact system of small, rocky planets.
—Samantha Mathewson, Space.com, 24 July 2025
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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
Illustration: Getty Images A team of astronomers from the University of Montreal has discovered a new potentially habitable exoplanet orbiting the red dwarf star L 98-59, 35 light-years from Earth.
—Jorge Garay, Wired News, 28 July 2025
Located about 35 light-years from Earth, L 98-59 is a cool, dim red dwarf star already known to host a compact system of small, rocky planets.
—Samantha Mathewson, Space.com, 24 July 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 19 Aug. 2025.
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