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dwarf star
noun
- any of the ordinary main sequence stars, as those of spectral types O, B, A, F, G, K, and M.
dwarf star
noun
- any luminosity class V star, such as the sun, lying in the main sequence of the Hertzsprung-Russell diagram Also calledmain-sequence star See also red dwarf white dwarf
dwarf star
- A relatively small, low-mass star that emits an average or below-average amount of light. Most dwarf stars, including the Sun, are main-sequence stars, the principal exception being white dwarfs, which are the remnants of larger collapsed stars. Main-sequence dwarfs burn their hydrogen at a much slower rate than giant and supergiant stars and are consequently less luminous and have longer lifespans than those non-main-sequence stars do.
Word History and Origins
Origin of dwarf star1
A Closer Look
Example Sentences
A team of astronomers found 19 strange radio signals from red dwarf stars, four of which they think could be coming from orbiting exoplanets, potentially marking the first time exoplanets have been discovered using radio frequencies.
The typical cosmic magnets—such as red dwarf stars, magnetars, or brown dwarfs—shine brightly with other forms of radiation.
There’s perhaps nothing more ancient and unchanging than the sun, a yellow dwarf star that has illuminated Earth for over 4 billion years.
Indeed, the team identified a group of 11 potential Hycean planets orbiting red dwarf stars near Earth—within 35 and 150 light years—worthy of observation.
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