Black Holes

I know the description is kind of metaphorical and reflects a Gosh-Wow! attitude to the phenomenon and that light can’t escape from below the event horizon.

But they aren’t!

Black, that is.

Not always, anyway.

Certainly not if they are attracting material from nearby stars. Then they must be the biggest firework displays in the universe.

For example:-

Black hole

The artist’s impression comes from

Here’s another nice one showing material from a nearby star bleeding into the accretion disc.

Accretion disc

That is from

Not at all bad for something that’s described as black.

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