A Black Hole Primer | NASA's Chandra X-ray Observatory

A Black Hole Primer | NASA's Chandra X-ray Observatory

A supermassive black hole weighing about 4 million times the mass of our Sun sits at the center of our Galaxy. Astronomers call this black hole “Sagittarius A*” or “Saj A-star” for short. Sgr A* sits in a complex and dynamic environment surrounded by stars, hot gas, supernova remnants and more.  Learn more about this black hole and others in our black hole primer video. 

Credit: NASA's Chandra X-ray Observatory

Duration: 6 minutes

Release Date: May 11, 2023

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