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  2. Stellar population - Wikipedia

    en.wikipedia.org/wiki/Stellar_population

    Caffau's star was identified as the most metal-poor star yet when it was found in 2012 using Sloan Digital Sky Survey data. However, in February 2014 the discovery of an even lower-metallicity star was announced, SMSS J031300.36-670839.3 located with the aid of SkyMapper astronomical survey data.

  3. List of oldest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_oldest_stars

    The age of the oldest known stars approaches the age of the universe, about 13.8 billion years. Some of these are among the first stars from reionization (the stellar dawn), ending the Dark Ages about 370,000 years after the Big Bang. [1] This list includes stars older than 12 billion years, or about 87% of the age of the universe.

  4. Starburst galaxy - Wikipedia

    en.wikipedia.org/wiki/Starburst_galaxy

    It was initially thought that BCGs were genuinely young galaxies in the process of forming their first generation of stars, thus explaining their low metal content. However, old stellar populations have been found in most BCGs, and it is thought that efficient mixing may explain the apparent lack of dust and metals. Most BCGs show signs of ...

  5. Signal detected from 'cosmic dawn,' the birth of the first stars

    www.aol.com/article/news/2018/03/01/signal...

    The moment when the first stars in the universe lit up was detected by scientists this week in a revolutionary finding through a faint radio signal. Signal detected from 'cosmic dawn,' the birth ...

  6. SDSS J001820.5−093939.2 - Wikipedia

    en.wikipedia.org/wiki/SDSS_J001820.5%E2%88...

    This means that SDSS J0018−0939 most likely preserved the elemental abundance ratios produced by a first-generation very-massive star. [7] First generation stars are expected to self-regulate their growth by radiative feedback in the formation process, and to achieve masses typically tens of times that of the Sun. A fraction of stars might ...

  7. Lists of stars - Wikipedia

    en.wikipedia.org/wiki/Lists_of_stars

    The following are lists of stars. ... List of extremes in the sky; List of hypothetical stars; ... EBLM J0555-57Ab — is one of the smallest stars ever discovered.

  8. Timeline of knowledge about galaxies, clusters of galaxies ...

    en.wikipedia.org/wiki/Timeline_of_knowledge...

    5th century BC — Democritus proposes that the bright band in the night sky known as the Milky Way might consist of stars. 4th century BC — Aristotle believes the Milky Way to be caused by "the ignition of the fiery exhalation of some stars which were large, numerous and close together" and that the "ignition takes place in the upper part of the atmosphere, in the region of the world which ...

  9. List of star extremes - Wikipedia

    en.wikipedia.org/wiki/List_of_star_extremes

    A star is a massive luminous spheroid astronomical object made of plasma that is held together by its own gravity.Stars exhibit great diversity in their properties (such as mass, volume, velocity, stage in stellar evolution, and distance from Earth) and some of the outliers are so disproportionate in comparison with the general population that they are considered extreme.