Biggest star in our galaxy

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The Sun is a pretty boring star. Still burning through the hydrogen in its core, our middle-aged Sun is comfortable at its current, relatively petite size. And though it will stay this way for about 5 billion years more, our star will eventually run low on hydrogen and switch to fusing helium deep within. This will inflate the Sun into a red giant over the span of just a couple of hundred million years. After engulfing the innermost planets, possibly including Earth, the Sun will continually shed its outer layers, eventually leaving behind a smoldering white dwarf surrounded by a beautiful planetary nebula of glowing gas. That’s the picturesque life that most stars live. But just like people, some stars have wildly different experiences. So, let’s do a quick review of some of the universe’s most extreme stars. The biggest: UY Scuti Just like in the DC Universe, sometimes the clearest way for astronomers to express something is truly extraordinary is to add the prefix super. It’s the case with Superman, as well as with supergiant stars — a fitting category for the largest known star in the universe, UY Scuti. One day, the Sun will become a red giant. But if it had started its life with a dozen or so times its current mass, it could have eventually evolved into a red supergiant. (UY Scuti has already shed a lot of mass.) The biggest of these stars, sometimes called hypergiants, can swell to more than 1,000 times the size of the Sun. But UY Scuti, located near the center of t...

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Sagittarius constellation lies in the southern sky. It is one of the constellations of the zodiac. It represents the archer. Sagittarius is usually depicted as a centaur holding a bow and arrow. The constellation’s symbol is ♐. It is also associated with Crotus, the satyr who kept company of the Muses on Mount Helicon. Sagittarius is one of the largest The constellation contains the Facts, location and map Sagittarius is the 15th largest constellation in the sky. It occupies an area of 867 square degrees. It is located in the fourth quadrant of the southern hemisphere (SQ4) and can be seen at latitudes between +55° and -90°. The neighboring constellations are The constellation name Sagittarius is pronounced /sædʒɪˈtɛəriəs/. In English, the constellation is known as the Archer. The genitive form of Sagittarius, used in star names, is Sagittarii (pronunciation: /ˌsædʒəˈtɛəriaɪ/). The three-letter abbreviation, adopted by the International Astronomical Union (IAU) in 1922, is Sgr. Sagittarius has seven stars brighter than magnitude 3.00 and three stars located within 10 parsecs (32.6 light years) of Earth. The brightest star in Sagittarius is The constellation Sagittarius contains 17 named stars. The proper Sagittarius, image: Constellation Guide The constellation has 32 stars with confirmed planets. OGLE-2006-BLG-109L (spectral class M0V) has two known exoplanets, suspected analogs of Jupiter and Saturn, discovered in 2008. The planets SWEEPS-04, orbiting the magnitude 18 st...