An artist's conception of a supermassive black hole surrounded by an accretion disk and emitting a relativistic jet.

You could cross one alive

A supermassive black hole is so enormous that, at its edge, the pull on your head and feet can be surprisingly mild. At the event horizon of a 10 million-solar-mass black hole, that stretching is about the same as on Earth's surface.

Supermassive Black Holes: Bigger Means Stranger

An artist's impression of stars born in winds from supermassive black holes.[63]

Bigger can mean gentler

That sounds backward, but the bigger the black hole, the weaker the tidal force right at its event horizon. For supermassive black holes, the deadly stretching does not become severe until far deeper inside.

Supermassive Black Holes: Bigger Means Stranger

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