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♪

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Now that you’ve learned about the basic solitary black hole,
let’s start talking about some fancier ones!

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While black holes themselves are indeed black,

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they can also be a bright source of light,
putting on a great show if things like

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gas, dust, snacks, potatoes, missing left socks,
or even stars get a bit too close.

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Often, this stuff can turn into an accretion disk,

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which is basically just a bunch of gas, dust, and, um,
other stuff … circling the black hole in, well, a disk.

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Anyway, as everything spirals in, it gets super-hot
and causes the wonderful spectacle we see here.

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Black holes can also show off by launching powerful jets,

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which are made when some of the stuff falls toward the black hole,
gets sped up to nearly the speed of light,

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and then gets thrown off at …
also nearly the speed of light!

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Some of this stuff, in the form of light and charged particles,
can even make it all the way to planets like Earth!

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The most amazing thing about all this, though, is that it could actually appear
as many kinds of brilliant, bright light,

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including lots of light we can’t see with our eyes!

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So, if you really want to see a fancy black hole in all its glory,

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it could help to have a lot of different telescopes that can see all the fanciness.