Flares from Infinity: Sagittarius A* Part 1
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The gargantuan black holes at the centers of galaxies seem impossibly large. How did they grow so large in the short history of our Universe?
Planets are small and difficult to spot out in the vast reaches of space, but researchers think they've identified one in another galaxy for the first time. Learn more about M51-ULS-1b in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/firs ...