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1. en.wikipedia.org › wiki › Sagittarius_A*Sagittarius A* - Wikipedia

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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 .

2. www.space.com › sagittarius-aSagittarius A*: The Milky Way's supermassive black hole

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   May 12, 2022 · To observe Sagittarius A*, astronomers monitored the star S2 , which orbits Sagittarius A* at a distance of 11 billion miles (18 billion km) and a speed of 17.1 million mph (11.4 kph) . The star ...

3. www.nasa.gov › supermassive-black-hole-sagittariusSupermassive Black Hole Sagittarius A* - NASA

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   Aug 29, 2013 · NASA. Aug 29, 2013. Image Article. Supermassive black hole Sagittarius A* (Sgr A*) is located in the middle of the Milky Way galaxy. The center of the Milky Way galaxy, with the supermassive black hole Sagittarius A* (Sgr A*), located in the middle, is revealed in these images. As described in our press release, astronomers have used NASA’s ...

4. www.britannica.com › place › Sagittarius-A-astronomySagittarius A* (Sgr A*) | Location, Mass, Pronunciation ...

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   Sagittarius A* (pronounced “Sagittarius a star”) is a compact, extremely bright point source. X-ray, infrared, spectroscopic, and radio interferometric investigations have indicated the very small dimensions of this region; the event horizon of the black hole has a radius of 12 million km (7 million miles).

5. www.jpl.nasa.gov › edu › newsTelescopes Get Extraordinary View of Milky Way's Black Hole

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   May 12, 2022 · This image shows the center of the Milky Way galaxy along with a closer view of Sagittarius A*. It was made by combining X-ray images from NASA's Chandra X-ray Observatory (blue) and infrared images from the agency's Hubble Space Telescope (red and yellow). The inset shows Sgr A* in X-rays only, covering a region half a light year wide.

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6. www.nature.com › articles › d41586/022/01320-yBlack hole at the centre of our Galaxy imaged for the first time

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   May 12, 2022 · But the Sagittarius A* data were more challenging to analyse. The two black holes have roughly the same apparent size in the sky, because M87* is nearly 2,000 times farther away but about 1,600 ...

7. People also ask

   How big is Sagittarius A*?

   • In 2008, astronomers Reinhard Genzel and Andrea Ghez determined Sagittarius A* to have a mass 4.3 million times that of the sun. Astronomers have also calculated that the diameter of the Milky Way’s supermassive black hole is around 14.6 million miles (23.5 million kilometers) .

   Sagittarius A*: The Milky Way's supermassive black hole - Space.com

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   Where is Sagittarius A* located?

   • Responsible NASA Official: Abigail Bowman Supermassive black hole Sagittarius A* (Sgr A*) is located in the middle of the Milky Way galaxy.

   Supermassive Black Hole Sagittarius A* - NASA

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   How far is Sagittarius A* from Earth?

   • To observe Sagittarius A*, astronomers monitored the star S2 , which orbits Sagittarius A* at a distance of 11 billion miles (18 billion km) and a speed of 17.1 million mph (11.4 kph) . The star also has a highly elliptical 16-year orbit . On May 12, 2022, scientists unveiled our first view of Sagittarius A* in a striking image.

   Sagittarius A*: The Milky Way's supermassive black hole - Space.com

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   Is Sagittarius A supermassive black hole?

   • Our local galactic center’s black hole, Sagittarius A*, is a supermassive black hole with a mass of about four million suns, which is fairly small for a supermassive black hole. NASA’s Hubble Space Telescope and other telescopes have determined that many galaxies have supermassive black holes at their center.

   Telescopes Get Extraordinary View of Milky Way's Black Hole

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   What is the mass of Sagittarius A*?

   • From examining the Keplerian orbit of S2, they determined the mass of Sagittarius A* to be 4.1±0.6 million solar masses, confined in a volume with a radius no more than 17 light-hours (120 AU [18 billion km; 11 billion mi]). [ 39 ]

   Sagittarius A* - Wikipedia

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   How big is Sagittarius A* compared to the Milky Way?

   • This is  tiny compared to the Milky Way itself, which is 100,000 light-years wide and 1,000 light-years thick. Also dwarfing Sagittarius A* is a disk of gas surrounding it that extends for between 5 and 30 light-years occasionally feeding matter to Sagittarius A* causing faint flashes of X-rays.

   Sagittarius A*: The Milky Way's supermassive black hole - Space.com

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8. www.nasa.gov › image-article › sagittarius-nasaSagittarius A*: NASA Telescopes Support Event Horizon ...

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   May 12, 2022 · Astronomers are using these observations to learn more about how the black hole in the center of the Milky Way galaxy — known as Sagittarius A * (Sgr A* for short) — interacts with, and feeds off, its environment some 27,000 light years from Earth.