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  2. 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 ...

  3. Star - Wikipedia

    en.wikipedia.org/wiki/Star

    Stars less massive than 0.25 M ☉, called red dwarfs, are able to fuse nearly all of their mass while stars of about 1 M ☉ can only fuse about 10% of their mass. The combination of their slow fuel-consumption and relatively large usable fuel supply allows low mass stars to last about one trillion ( 10 × 10 12 ) years; the most extreme of 0. ...

  4. List of planet types - Wikipedia

    en.wikipedia.org/wiki/List_of_planet_types

    A class of extrasolar planets whose characteristics are similar to Jupiter, but that have high surface temperatures because they orbit very close—between approximately 0.015 and 0.5 AU (2.2 × 10 ^ 6 and 74.8 × 10 ^ 6 km)—to their parent stars, whereas Jupiter orbits its parent star (the Sun) at 5.2 AU (780 × 10 ^ 6 km), causing low ...

  5. Category:Star types - Wikipedia

    en.wikipedia.org/wiki/Category:Star_types

    Stars by type (25 C, 1 P) Pages in category "Star types" The following 88 pages are in this category, out of 88 total. This list may not reflect recent changes. A.

  6. List of proper names of stars - Wikipedia

    en.wikipedia.org/wiki/List_of_proper_names_of_stars

    In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...

  7. Category:Stars - Wikipedia

    en.wikipedia.org/wiki/Category:Stars

    This top-category page is for specific stars. For groupings of stars, ... Star types (1 C, 88 P) + Astronomical catalogues of stars (16 C, 50 P) Star atlases (2 C, 8 P) >

  8. Main sequence - Wikipedia

    en.wikipedia.org/wiki/Main_sequence

    Stars with less than 0.23 M ☉ [58] are predicted to directly become white dwarfs when energy generation by nuclear fusion of hydrogen at their core comes to a halt, but stars in this mass range have main-sequence lifetimes longer than the current age of the universe, so no stars are old enough for this to have occurred.

  9. Star cluster - Wikipedia

    en.wikipedia.org/wiki/Star_cluster

    Such stars predominate within clusters because hotter and more massive stars have exploded as supernovae, or evolved through planetary nebula phases to end as white dwarfs. Yet a few rare blue stars exist in globulars, thought to be formed by stellar mergers in their dense inner regions; these stars are known as blue stragglers.

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