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  2. Brown dwarf - Wikipedia

    en.wikipedia.org/wiki/Brown_dwarf

    True stars burn their lithium within a little over 100 Myr, whereas brown dwarfs (which can, confusingly, have temperatures and luminosities similar to true stars) will not. Hence, the detection of lithium in the atmosphere of an object older than 100 Myr ensures that it is a brown dwarf.

  3. List of brown dwarfs - Wikipedia

    en.wikipedia.org/wiki/List_of_brown_dwarfs

    This is a list of brown dwarfs. These are objects that have masses between heavy gas giants and low-mass stars. [1] The first isolated brown dwarf discovered was Teide 1 in 1995. [2] The first brown dwarf discovered orbiting a star was Gliese 229 B, also discovered in 1995. [3] The first brown dwarf found to have a planet was 2M1207, discovered ...

  4. Luhman 16 - Wikipedia

    en.wikipedia.org/wiki/Luhman_16

    Luhman 16 is the nearest-known star/brown-dwarf system to Alpha Centauri, located 3.577 ly (1.097 pc) from Alpha Centauri AB, and 3.520 ly (1.079 pc) from Proxima Centauri. [ note 3 ] Both systems are located in neighboring constellations, in the same part of the sky as seen from Earth, but Luhman 16 is a bit farther away.

  5. Three decades later, first brown dwarf ever found offers a ...

    www.aol.com/news/three-decades-later-first-brown...

    In 1995, astronomers confirmed the discovery for the first time of a brown dwarf, a body too small to be a star and too big to be a planet - sort of a celestial tweener. Researchers now have taken ...

  6. Stellar classification - Wikipedia

    en.wikipedia.org/wiki/Stellar_classification

    The new spectral types L, T, and Y were created to classify infrared spectra of cool stars. This includes both red dwarfs and brown dwarfs that are very faint in the visible spectrum. [95] Brown dwarfs, stars that do not undergo hydrogen fusion, cool as they age and so progress to later spectral types. Brown dwarfs start their lives with M-type ...

  7. List of nearest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars

    Additionally, astronomers have found 6 white dwarfs (stars that have exhausted all fusible hydrogen), 21 brown dwarfs, as well as 1 sub-brown dwarf, WISE 0855−0714 (possibly a rogue planet). The closest system is Alpha Centauri , with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth.

  8. List of smallest known stars - Wikipedia

    en.wikipedia.org/wiki/List_of_smallest_known_stars

    Brown dwarf [74] CoRoT-3 b: 72,200 [92] LHS 1070 B 72,350 Likely a brown dwarf based on its mass [80] [81] UGPS 0722-05: 72,850 Possibly a rogue planet [93] WISE 2150–7520 A 73,635 [79] Luhman 16 B 74,350 Luhman 16 B and Luhman 16 A are the closest brown dwarf stars to Earth, and the third-nearest star system to the Solar System. [e] DENIS ...

  9. A brown dwarf discovered 30 years ago is actually twins ...

    lite.aol.com/news/science/story/0001/20241016/...

    The twins orbit a small star about 18 light-years away. A light-year is 5.8 trillion miles. Astronomers have spotted brown dwarf pairs before, but these two whip around at much closer range. They orbit each other every 12 days, less than the time it takes for the moon to circle the Earth.