Astronomers Have Found Evidence of a Big Black Hole Wandering Our Galaxy

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According to (This article and its images were originally posted on ScienceAlert January 15, 2019 at 09:31PM.)

The peculiar movement of gas at the galactic centre could be the smoking gun that finally leads astronomers to the most elusive type of black hole – the middleweight.

Black holes are pretty hard to find unless they’re actively feeding (or colliding), since they don’t emit any electromagnetic radiation (except perhaps for Hawking radiation, which, if it exists, we can’t detect).

That’s because electromagnetic radiation can’t achieve escape velocity from beyond the event horizon; thus black holes are invisible to our detection methods when they’re not doing something noticeable.

Still, we know there are stellar mass black holes, formed from the core collapse of a massive star, up to about 100 times the mass of the Sun; and supermassive black holes, starting from about 100,000 times the mass of the Sun.

Between these two extremes, though, is a whopping question mark. Although there has been pretty good indirect evidence that points to the existence of black holes between 100 and 100,000 solar masses, their existence has yet to be confirmed.

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This article and images were originally posted on [ScienceAlert] January 15, 2019 at 09:31PM. Credit to the original author and ScienceAlert | ESIST.T>G>S Recommended Articles Of The Day.

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