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Battle of the bulges: Have astronomers been wrong about spiral galaxies all this time?

12 Jun 2019, 13:00 UTC
Battle of the bulges: Have astronomers been wrong about spiral galaxies all this time? ESO

Some big news from Galaxy Zoo: It's looking very much like a classic classification scheme for galaxies — first dreamed up by Edwin Hubble himself! — may be, um,  wrong. The consequences of this are as dramatic as they are cosmic: It implies very strongly that the way we've been thinking about how galaxies form and maintain spiral arms is also wrong. Instead of being semi-permanent features of galaxies, they may instead actually wind themselves up, disappear, and reform again!

Wow. This is a very big deal.

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