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Question Everything .is/listening
Shared by Gonçalo Gonçalves / 14.02.2017

Ask Ethan: If gravity attracts, how does the ‘dipole repeller’ push the Milky Way?

Is gravitational repulsion a real thing?

One of the most peculiar things about the Universe is how quickly the Milky Way appears to be moving. Despite having mapped out the cosmic masses nearby to unprecedented accuracy, there still doesn’t appear to be enough to cause the motion we actually experience. The idea of a “great attractor” doesn’t quite match up with what we see; what’s actually present isn’t quite “great” enough. But a new idea — that of a dipole repeller — might finally explain this longstanding conundrum. How would that work, and what it is, exactly? That’s what Darren Redfern wants to know.

 

Ask Ethan: If gravity attracts, how does the ‘dipole repeller’ push the Milky Way?

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