A green star has been identified by astronomers for the first time - The Globe and Mail
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Open this photo in gallery:An artist's impression of the cool white dwarf star WDJ1330+6435, which has accreted sodium-rich rocky material from its planetary system into its atmosphere. Mark A. Garlick/University of Warwick/via REUTERSAstronomers for the first time have identified a green star, documenting a dense stellar remnant called a white dwarf that became a ghostly shade of chartreuse after ingesting rocky debris from planets that once had orbited it. A star’s colour typically is governed by its temperature, with cooler stars appearing orange, the sun and stars similar to it appearing white, and the hottest ones appearing a pale blue. But the formula is different for a white dwarf, which is the leftover core of a low- to medium-mass star that burned through its nuclear fuel and blew off its outer layers. Most white dwarfs have colours similar to other stars, and their average colour is white. But changes in their chemistry over time can turn some of them into rarer colours. The newly identified green one, named WD J1330+6435, is a white dwarf in the Milky Way galaxy that is located about 280 light-years from Earth in the constellation Draco.
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