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Here’s what really happened to Hanny’s Voorwerp

Astronomers can finally explain a gas cloud’s strange glow

GLOWING GAS Hanny’s Voorwerp, the greenish smudge at the left of this image, is glowing thanks to photons from a feasting black hole in the galaxy at right.

NASA, ESA, W. Keel (Univ. Alabama), et al., Galaxy Zoo Team

By Lisa Grossman

November 27, 2017 at 4:30 pm

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