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Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
Sagittarius A (Sgr A) is a complex radio source at the center of the Milky Way, which contains a supermassive black hole. It is located between Scorpius and Sagittarius , and is hidden from view at optical wavelengths by large clouds of cosmic dust in the spiral arms of the Milky Way.
The Sagittarius A* cluster is the cluster of stars in close orbit around Sagittarius A*, the supermassive black hole at the center of the Milky Way (in the Galactic Center). The individual stars are often listed as " S-stars ", but their names and IDs are not formalized, and stars can have different numbers in different catalogues .
Later studies have estimated a mass of 3.7 million [34] [35] or 4.1 million solar masses. [ 24 ] On 5 January 2015, NASA reported observing an X-ray flare 400 times brighter than usual, a record-breaker, from Sagittarius A*.
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A black hole of mass similar to that of Mount Everest, [20] 6.3715 × 10 14 kg, would have a Schwarzschild radius much smaller than a nanometre. [ citation needed ] The Schwarzschild radius would be 2 × 6.6738 × 10 −11 m 3 ⋅kg −1 ⋅s −2 × 6.3715 × 10 14 kg / ( 299 792 458 m⋅s −1 ) 2 = 9.46 × 10 −13 m = 9.46 × 10 −4 nm .
Discover what the planets are predicting today for your health, love life, career and more with your sagittarius Daily Horoscope from AOL Horoscopes. Read Your Free Sagittarius Daily Horoscope for ...
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