There seems to be a massive black hole lurking in the Milky Way.

Using the Nobeyama 45-meter radio telescope, a team of astronomers led by Tomoharu Oka, a professor at Keio University in Japan, came to that conclusion after first spotting an enigmatic gas cloud called CO-0.40-0.22, located only 200 light-years away from the center of the Milky Way.

It quickly became clear this was not your typical gas cloud, since it contains gas with a very wide range of speeds. Researchers also found the cloud has an elliptical shape and consists of two components: a compact but low density component with a very wide velocity dispersion of 100 km/s, and a dense component extending 10 light-years with a narrow velocity dispersion.

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