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1 day ago · Sagittarius A* (/ ˈ eɪ s t ɑːr / AY star), abbreviated Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SAJ AY star), is the supermassive black hole 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, visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
- −29° 0′ 28.118″
- Sagittarius
- 17ʰ 45ᵐ 40.0409ˢ
- 8.26×10³⁶ kg, (4.154±0.014)×10⁶ M☉
1 day ago · The model assumes that general relativity is the correct theory of gravity on cosmological scales. It emerged in the late 1990s as a concordance cosmology , after a period of time when disparate observed properties of the universe appeared mutually inconsistent, and there was no consensus on the makeup of the energy density of the universe.
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1 day ago · Biography Youth and education House of birth in Brunswick (destroyed in World War II) Caricature of Abraham Gotthelf Kästner by Gauss (1795) Johann Carl Friedrich Gauss was born on 30 April 1777 in Brunswick (Braunschweig) in the Duchy of Brunswick-Wolfenbüttel (now part of Germany's federal state Lower Saxony), to a family of lower social status.
- Mathematics and sciences
7 hours ago · Since time immemorial, humans have wondered what the Universe is, where it came from, and how it got to be the way it is today. Once a question far beyond the realm of knowledge, science was ...
7 hours ago · The content of this article has reliable sources, and it has been repeated at the end of the article«——[·Preface·]——»["Unauthorized, it is forbidden to move, and offenders will be investigated"] Wang Xiaobo, Mainland...
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