104: Biggest Black Hole

The biggest black hole ever has been found — not supermassive, but *ultra*massive. Emily takes Chris on a tour of all the types of black hole, from the speculative minis, through the solar and intermediate mass kinds, to the stonking supermassive and frankly ludicrous ultramassive. And we ask, how exactly do you see a black hole when it's ... you know ... black?

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Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.

On the web: syzygy.fm | Twitter: @syzygypod

Things we talk about in this episode:

• The ultramassive black hole paper

• Article about the research

• Mini black holes

• Will the LHC destroy the Earth?

• Stellar mass black holes

• Intermediate mass black holes

• LIGO and Black hole mergers

• Supermassive black holes

• That black hole photo

• Squeezars

• The biggest black holes

• Hubble Space Telescope

• Gravitational lensing

• Euclid, LSST and the SKA