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  2. List of largest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_stars

    The Sun, the orbit of Earth, Jupiter, and Neptune, compared to four stars (Pistol Star, Rho Cassiopeiae, Betelgeuse, and VY Canis Majoris) Overview Although red supergiants are often considered the largest stars, some other star types have been found to temporarily increase significantly in radius, such as during LBV eruptions or luminous red ...

  3. List of Solar System objects by size - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System...

    The size of solid bodies does not include an object's atmosphere. For example, Titan looks bigger than Ganymede, but its solid body is smaller. For the giant planets , the "radius" is defined as the distance from the center at which the atmosphere reaches 1 bar of atmospheric pressure.

  4. WR 102 - Wikipedia

    en.wikipedia.org/wiki/WR_102

    WR 102's size compared to the sun. WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova.

  5. Star - Wikipedia

    en.wikipedia.org/wiki/Star

    For stars with metallicity similar to the Sun, the theoretical minimum mass the star can have and still undergo fusion at the core, is estimated to be about 75 M J. [159] [160] When the metallicity is very low, the minimum star size seems to be about 8.3% of the solar mass, or about 87 M J.

  6. List of smallest known stars - Wikipedia

    en.wikipedia.org/wiki/List_of_smallest_known_stars

    This red dwarf has a size comparable to that of the planet Saturn. As of 2019, it is the second lightest hydrogen-fusing star known, marginally heavier (0.0777-0.0852M ☉) than the 2MASS J0523-1403. Although its mass is comparable to that of TRAPPIST-1, its radius is 1/3 smaller. [64] [65] [66] Luhman 16 A 60,768 Brown dwarf

  7. Stellar classification - Wikipedia

    en.wikipedia.org/wiki/Stellar_classification

    Of the main-sequence star types, stars more massive than 1.5 times that of the Sun (spectral types O, B, and A) age too quickly for advanced life to develop (using Earth as a guideline). On the other extreme, dwarfs of less than half the mass of the Sun (spectral type M) are likely to tidally lock planets within their habitable zone, along with ...

  8. List of most massive stars - Wikipedia

    en.wikipedia.org/wiki/List_of_most_massive_stars

    It is the most massive star that has a Bayer designation. It was only discovered to be (at least) two stars in the past few decades. Both the obscuring clouds and the great distances also make it difficult to judge whether the star is just a single supermassive object or, instead, a multiple star system. A number of the "stars" listed below may ...

  9. Betelgeuse - Wikipedia

    en.wikipedia.org/wiki/Betelgeuse

    Size comparison between Arcturus, Rigel, S Doradus, Antares, and Betelgeuse Size comparison of Betelgeuse, Mu Cephei, KY Cygni, and V354 Cephei, according to Emily Levesque [117] On 13 December 1920, Betelgeuse became the first star outside the Solar System to have the angular size of its photosphere measured. [37]