How to Use red dwarf in a Sentence

red dwarf

noun
  • At the heart of this system is a small, dim star called a red dwarf.
    — Kaitlin Rasmussen, Scientific American, 14 Sep. 2023
  • Barnard’s star is also a very small and dim type of star known as a red dwarf.
    — Loren Grush, The Verge, 14 Nov. 2018
  • The spectra also showed the red dwarf’s glow was mixed with blue light.
    — Bydaniel Clery, science.org, 4 Dec. 2024
  • The star is a red dwarf star that's roughly half as massive as our sun.
    — Doyle Rice, USA TODAY, 25 June 2020
  • The red dwarf in question has roughly half the mass of our Sun.
    — Chris Young, Interesting Engineering, 12 Nov. 2025
  • All of them appeared to originate from a faint red dwarf star.
    — Ashley Strickland, CNN, 14 Mar. 2025
  • Its sun is not a hot yellow star like ours, but a smaller, cooler red dwarf.
    — Jeffrey Kluger, Time, 11 Sep. 2019
  • That star will likely be a small red dwarf, barely a fraction of our sun’s mass.
    — Popular Mechanics, 7 Mar. 2023
  • Astronomers have to account for factors like starspots across the face of the red dwarf star.
    — Robert Lea, Space.com, 8 Sep. 2025
  • The cool red dwarf star, Trappist-1, is 40 light years from Earth.
    — New York Times, 7 Dec. 2017
  • Such large worlds are, however, rarely found around the smallest stars, red dwarfs.
    — Keith Cooper, Space.com, 4 June 2025
  • Those are precisely the wavelengths at which these small red dwarf stars give off most of their light.
    — WIRED, 2 Oct. 2023
  • Both the white dwarf and the red dwarf have their own intrinsic magnetic fields.
    — Keith Cooper, Space.com, 2 June 2026
  • The candidate stars are all red dwarfs, the most common type of star in our galaxy.
    — Jacopo Prisco, CNN, 13 June 2024
  • The only stars that will remain after that will be the lowest-mass red dwarf stars.
    — Big Think, 13 Mar. 2026
  • The star, Gliese 887, is a small, dim red dwarf star with about half the mass of our sun.
    — Ashley Strickland, CNN, 25 June 2020
  • Our yellow sun, for instance, is not so mediocre in a galaxy where red dwarf stars are the norm.
    — Charlie Wood, Popular Science, 18 June 2020
  • The planet is huge; the star is tiny, a red dwarf only 20 percent the mass of our own sun.
    — Avery Hurt, Discover Magazine, 27 June 2025
  • The most common star in our galaxy is a red dwarf, smaller and dimmer than the Sun.
    — John Timmer, Ars Technica, 20 Aug. 2019
  • There are some stars of this type, known as red dwarfs, that have been around since nearly the beginning of our universe.
    — Joshua Rapp Learn, Discover Magazine, 25 Feb. 2025
  • This consists of seven rocky Earth-sized planets in orbit around a cool red dwarf star.
    — Chris Holt, Discover Magazine, 20 Apr. 2022
  • Astronomers have discovered the first signs that tiny red dwarf stars can devour their own planets.
    — Robert Lea, Space.com, 29 May 2026
  • These dips in light are caused by planets passing in front of the small, cool, red dwarf star at the center of the system.
    — Joey Rodriguez - Michigan State University, Discover Magazine, 9 Mar. 2023
  • About the size of Saturn, the new world is circling a red dwarf star about 111 light-years away.
    — Alex Knapp, Forbes.com, 27 June 2025
  • The back-and-forth motion was due to another star’s gravity tugging on the red dwarf.
    — Ashley Strickland, CNN, 14 Mar. 2025
  • It’s known as VHS 1256 b and orbits two small red dwarf stars.
    — Joshua Hawkins, BGR, 12 Sep. 2022
  • At the shorter distance, a year in the life of a red dwarf planet is only 10 to 30 days.
    — Dennis Overbye, New York Times, 26 Mar. 2018
  • The star, known as GJ887, is a red dwarf that's roughly half as massive as our sun.
    — Doyle Rice, USA TODAY, 25 June 2020
  • The smallest red dwarfs, with masses barely bigger than a tenth of the mass of the Sun, can burn for trillions of years.
    — Paul Sutter, Ars Technica, 16 Apr. 2024
  • But Kepler-1649c orbits a red dwarf star, much smaller and cooler than our sun.
    — Ashley Strickland, CNN, 15 Apr. 2020

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'red dwarf.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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