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Negative gravity particles explain the expanding universe!





ocalhoun
Suppose for a moment, that particles exist with 'negative' gravity. They would be repelled from sources of 'positive' gravity, and also repelled from each other, in the reverse of ordinary gravity.

Think about it, where would you expect to find such particles? Grouped together? Of course not. On a planet's surface, or near any gravity well? Certainly not!

They would immediately shoot off into space, repelled from any source of 'positive' gravity, and from each other. They would end up in the emptiest regions of deep space, as thinly spread as possible, and always expanding. The cumulative pressure they exerted on the clumped masses of positive gravity matter would cause everything to expand away from everything else... at an accelerating rate!
Bikerman
Err, not really.
They would repel themselves, not spacetime.
ocalhoun
Why would they need to repel spacetime? And how does the idea of 'repel spacetime' even make sense?
Bikerman
Our observations lead to the conclusion that spacetime itself is expanding, rather than the objects within spacetime 'moving away' from each other. Thus spacetime itself is 'growing' leading to what we call expansion.
ocalhoun
Bikerman wrote:
Our observations lead to the conclusion that spacetime itself is expanding

I am ignorant of these observations...

I thought we assumed spacetime itself is expanding because we had no other way to explain the expansion of the universe... What evidence is there, besides noticing distant galaxies all moving away from us?
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