A massive black hole accreting matter off of a nearby star. Image credit: NASA/JPL-Caltech.

Could black holes be the dark matter?

It’s an old idea made new again, but it just might fall apart.

Ethan Siegel
Starts With A Bang!
6 min readJun 2, 2016

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“[The black hole] teaches us that space can be crumpled like a piece of paper into an infinitesimal dot, that time can be extinguished like a blown-out flame, and that the laws of physics that we regard as ‘sacred,’ as immutable, are anything but.” -John Wheeler

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Ethan Siegel
Starts With A Bang!

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.