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t1_jakrf04 wrote

Reply to comment by in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by

This blows my mind a bit, thanks to the steady diet of documentaries I've had for years.

If I'm reading Diatribe correctly, there would be no "big rip" scenario because local gravity would overcome large scale expansion. And there are lots of similar implications... Am I getting that right?

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t1_jalbzp5 wrote

Not quite because as I noted, dark energy supplies gravitational repulsion. In the big rip, the energy density of dark energy increases over time, and so does the repulsive force. That is what rips everything apart.

(Observations currently do not support that the energy density of dark energy is increasing.)

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