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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.
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.
Sagittarius A* (Sgr A*), supermassive black hole at the centre of the Milky Way Galaxy, located in the constellation Sagittarius and having a mass equivalent to four million Suns.
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
12 Μαΐ 2022 · The Event Horizon Telescope, funded by the National Science Foundation, has released the first image of our galactic black hole, Sagittarius A* (pronounced “Sagittarius A-star” and abbreviated Sgr A*). Read on to find out how the image was acquired and learn more about black holes and Sagittarius A*.
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.
