Sagittarius A near the border of the constellations Sagittarius and Scorpius

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Sagittarius A* (pronounced “Sagittarius A-star”, standard abbreviation Sgr A*) is a bright and very compact astronomical radio source at the center of the Milky Way, near the border of the constellations Sagittarius and Scorpius.

It is part of a larger astronomical feature known as Sagittarius A. Sagittarius A* is thought to be the location of a supermassive black hole, like those that are now generally accepted to be at the centers of most spiral and elliptical galaxies.

Observations of the star S2 in orbit around Sagittarius A* have been used to show the presence of, and produce data about, the Milky Way’s central supermassive black hole, and have led to the conclusion that Sagittarius A* is the site of that black hole.

Image: NASA
Text: Wikipedia contributors. “Sagittarius A*.” Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 22 Jul. 2016. Web. 30 Jul. 2016.

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  1. walterquinnhall

    I also want to see the constellation of Cancer together with the constellation of Vulpecula. However i can’t find them.

  2. Tony Lea

    I’m a Sagittarian, thus, the galaxy and everything revolves around us. #astronomernotastrologist

  3. walterquinnhall

    Amazing picture.

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