• Thumbnail for Brown dwarf
    Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars. Their...
    186 KB (20,207 words) - 06:41, 25 August 2024
  • is a list of brown dwarfs. These are objects that have masses between heavy gas giants and low-mass stars. The first isolated brown dwarf discovered was...
    87 KB (1,787 words) - 20:33, 11 August 2024
  • Thumbnail for Sub-brown dwarf
    A sub-brown dwarf or planetary-mass brown dwarf is an astronomical object that formed in the same manner as stars and brown dwarfs (i.e. through the collapse...
    11 KB (1,328 words) - 06:40, 18 August 2024
  • Thumbnail for Red dwarf
    These red dwarfs have spectral types of L0 to L2. There is some overlap with the properties of brown dwarfs, since the most massive brown dwarfs at lower...
    36 KB (4,249 words) - 12:06, 3 July 2024
  • Thumbnail for Black dwarf
    dwarfs is one observational limit on the universe's age. The name "black dwarf" has also been applied to hypothetical late-stage cooled brown dwarfs –...
    10 KB (1,142 words) - 05:00, 25 July 2024
  • Thumbnail for Planetary-mass object
    planets) or formed through cloud-collapse rather than accretion (sub-brown dwarfs). While the term technically includes exoplanets and other objects, it...
    18 KB (1,994 words) - 22:45, 14 August 2024
  • Thumbnail for White dwarf
    A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to the Sun's...
    164 KB (18,719 words) - 11:36, 18 August 2024
  • Thumbnail for Dwarf star
    A dwarf star is a star of relatively small size and low luminosity. Most main sequence stars are dwarf stars. The meaning of the word "dwarf" was later...
    5 KB (578 words) - 17:18, 25 June 2024
  • Thumbnail for Brown-dwarf desert
    The brown-dwarf desert is a theorized range of orbits around a star within which brown dwarfs are unlikely to be found as companion objects. This is usually...
    6 KB (741 words) - 16:06, 18 July 2024
  • brown dwarfs would have ceased fusion long before their discovery. Binary stars and other multiple-star formations are common, and many brown dwarfs orbit...
    84 KB (10,296 words) - 23:19, 23 August 2024
  • Thumbnail for List of nearest stars
    This list covers all known stars, white dwarfs, brown dwarfs, and sub-brown dwarfs within 20 light-years (6.13 parsecs) of the Sun. So far, 131 such objects...
    116 KB (5,520 words) - 21:27, 24 August 2024
  • Thumbnail for Stellar classification
    "Yellow" dwarfs such as the Sun are white, "red" dwarfs are a deep shade of yellow/orange, and "brown" dwarfs do not literally appear brown, but hypothetically...
    104 KB (11,330 words) - 14:12, 9 August 2024
  • Thumbnail for Backyard Worlds
    which is part of the Zooniverse web portal. It aims to discover new brown dwarfs, faint objects that are less massive than stars, some of which might...
    47 KB (4,677 words) - 08:00, 25 August 2024
  • of planetary mass which is not gravitationally bound to any star or brown dwarf. Rogue planets may originate from planetary systems in which they are...
    80 KB (7,817 words) - 07:22, 26 August 2024
  • Thumbnail for Dwarf planet
    Nine likeliest dwarf planets and dates of discovery A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough...
    97 KB (8,987 words) - 12:13, 19 August 2024
  • Thumbnail for Exoplanet
    fusion of deuterium), it is too massive to be a planet and might be a brown dwarf instead. Known orbital times for exoplanets vary from less than an hour...
    147 KB (15,935 words) - 12:18, 23 August 2024
  • Thumbnail for List of largest exoplanets
    stellar scale. Then there is the fact that these objects might be brown dwarfs, sub-brown dwarfs, or not exist at all. Because of this, this list only cites...
    113 KB (8,224 words) - 13:16, 25 August 2024
  • Thumbnail for Perovskite
    occurs in carbonatite near Schelingen, Kaiserstuhl, Germany. In stars and brown dwarfs the formation of perovskite grains is responsible for the depletion of...
    16 KB (1,588 words) - 08:04, 26 April 2024
  • This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume). This is a list...
    146 KB (13,067 words) - 10:07, 18 August 2024
  • Thumbnail for Planet
    generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System has eight planets by the most...
    197 KB (20,743 words) - 12:13, 23 August 2024
  • Thumbnail for Stellar evolution
    hydrogen to begin. These are known as brown dwarfs. The International Astronomical Union defines brown dwarfs as stars massive enough to fuse deuterium...
    49 KB (6,421 words) - 19:38, 1 August 2024
  • Thumbnail for J1407b
    Mamajek's team initially hypothesized that J1407b is an exoplanet or brown dwarf orbiting the star, but that has since been disfavored by later studies...
    39 KB (3,999 words) - 14:13, 24 August 2024
  • blue dwarf is a predicted class of star that develops from a red dwarf after it has exhausted much of its hydrogen fuel supply. Because red dwarfs fuse...
    4 KB (545 words) - 13:59, 15 December 2023
  • titleholders of being the red dwarf with the smallest volume, and its succession over time. List of least massive stars List of brown dwarfs Lists of stars Croswell...
    17 KB (839 words) - 08:07, 30 July 2024
  • Thumbnail for B-type main-sequence star
    diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants...
    12 KB (1,369 words) - 11:26, 21 July 2024
  • of astronomical objects with the spectral type Y. They are a mix of brown dwarfs and planetary-mass objects. They are the coldest such objects in interstellar...
    35 KB (2,469 words) - 06:39, 21 August 2024
  • sustained (approximately 0.08 solar masses). This definition includes brown dwarfs and former stars similar to EF Eridani B, and can also include objects...
    7 KB (881 words) - 16:14, 6 August 2024
  • Thumbnail for Subdwarf
    diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants...
    18 KB (2,103 words) - 10:29, 24 August 2024
  • Thumbnail for G-type main-sequence star
    star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type...
    12 KB (1,178 words) - 10:49, 13 August 2024
  • Thumbnail for Gliese 229
    Gliese 229 (category T-type brown dwarfs)
    as Gl 229 or GJ 229) is a binary system composed of a red dwarf and the second brown dwarf seen by astronomers, 18.8 light years away in the constellation...
    18 KB (1,648 words) - 18:29, 18 July 2024