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Sagittarius A* is the bright and compact radio source at the Galactic Center of the Milky Way, with a mass of 4.297 million solar masses. It was imaged by the Event Horizon Telescope in 2022, confirming it to be a black hole, and has a diameter of 51.8 million kilometres.
The Milky Way is the galaxy that includes the Solar System, with a diameter of 26.8 ± 1.1 kiloparsecs (87,400 ± 3,600 light-years ). It is a barred spiral galaxy with a supermassive black hole at its center and many satellite galaxies.
This is a list of open clusters located in the Milky Way. An open cluster is an association of up to a few thousand stars that all formed from the same giant molecular cloud. There are over 1,000 known open clusters in the Milky Way galaxy, but the actual total may be up to ten times higher. [1]
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A classic Japanese fantasy novel by Kenji Miyazawa about a boy's journey on a train across the Milky Way. The novel explores themes of self-sacrifice, ecosystem and the true heaven, and has been adapted into manga and anime.
The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy. It contains a supermassive black hole of about 4 million solar masses, called Sagittarius A*, which is a compact radio source near the galactic rotational center.
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That of the Milky Way is thought to have a scale height of around 300–400 parsecs (980–1,300 ly) in the vertical axis perpendicular to the disk, [1] and a scale length of around 2.5–4.5 kiloparsecs (8.2–14.7 kly) in the horizontal axis, in the direction of the radius. [2] For comparison, the Sun is 8 kiloparsecs (26 kly) out from the ...