
27: How to Build a Galaxy
The Supermassive Podcast
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Do All Galaxies Spin in the Same Direction?
When we look at galaxies, as you might expect, about half appear to be turning in one direction clockwise and the other half anticlockwise. And what that says really is that you're looking out and things are averaging out. It's what you'd expect by chance. So it isn't surprising that on average, you see that spread out neatly. But some situations where there might have been a recent collision or absorption of a galaxy and the rotation isn't quite what we'd expect. You can get counter rotating discs, which is really strange. We'll see how it works next month.
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