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Galaxies, averaging an estimated 100 million stars, [3] range in size from dwarfs with less than a thousand stars, [4] to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass ...
This was once the smallest known actively fusing star, when found in 2005, through 2013. It is the smallest eclipsing red dwarf, and smallest observationally measured diameter. [101] [102] [103] CoRoT-15b: 82,200 Brown dwarf [104] VB 10: 82,300 Red dwarf: It was the smallest known star from 1948 to 1981. [105] TRAPPIST-1: 82,925
From the present to about 10 14 (100 trillion) years after the Big Bang An image of many stars. LH 95 star forming region of the Large Magellanic Cloud. The image was taken using the Hubble Space Telescope. Source: European Space Agency (ESA/Hubble) The observable universe is currently 1.38 × 10 10 (13.8 billion) years old. [16]
The following is a list of particularly notable actual or hypothetical stars that have their own articles in Wikipedia, but are not included in the lists above. BPM 37093 — a diamond star Cygnus X-1 — X-ray source
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 ...
Bee Gees star Maurice died unexpectedly in 2003, aged 53, due to complications from a twisted intestine. His twin brother, Robin, died in 2012, aged 62, from liver and kidney failure after ...
A preon star is a proposed type of compact star made of preons, a group of hypothetical subatomic particles. Preon stars would be expected to have huge densities, exceeding 10 23 kilogram per cubic meter – intermediate between quark stars and black holes.
Gabe Ginsberg/Getty Images Star Trek star Gary Graham died at age 73 on Monday, January 22. Gary’s wife, Becky Graham, confirmed the actor’s death to The Hollywood Reporter on Tuesday, January ...