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The diameter of Sagittarius A* is smaller than the orbit of Mercury. On May 12, 2022, the first image of Sagittarius A* was released by the Event Horizon Telescope Collaboration. The image, which is based on radio interferometer data taken in 2017, confirms that the object contains a black hole.
12 Μαΐ 2022 · Sagittarius A*, often abbreviated to Sgr A* and pronounced "Sagittarius A star", is a supermassive black hole located at the center of our spiral galaxy, the Milky Way.
29 Αυγ 2013 · 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 Chandra X-ray Observatory to take a major step in understanding why material around Sgr A* is extraordinarily faint in X-rays.
25 Ιουλ 2023 · The diameter of Sagittarius A* is approximately 51,800,000 kilometres (32,200,000 miles), resulting in an estimated surface area of about 8,429,647,071,818,276 km² (3,254,703,593,723,180 miles²). Anatomy. Sagittarius A* is an extraordinary supermassive black hole located at the Galactic Center of the Milky Way.
Sagittarius A*, supermassive black hole at the center of the Milky Way Galaxy, located in the constellation Sagittarius and having a mass equivalent to four million Suns. The event horizon of the black hole has a radius of 12 million kilometers (seven million miles).
12 Μαΐ 2022 · The distance from the center of Sagittarius A* to its event horizon, a measurement known as the Schwarzschild radius, is enormous at seven million miles (12,000,000 kilometers or 0.08 astronomical units). But its apparent size when viewed from Earth is tiny because it is so far away.
12 Μαΐ 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.
