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Gravity can exist without mass, dark matter could be myth: Study (interestingengineering.com)

submitted 1 month ago by Espiritdescali@futurology.today to c/futurology@futurology.today

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[–] ArbitraryValue@sh.itjust.works 5 points 1 month ago (3 children)

Is this the sort of negative mass that would possibly allow for stable wormholes and therefore time travel?

[–] pyr0ball@sh.itjust.works 2 points 1 month ago (2 children)

I'd recommend Stephen Baxter's "Ring" novel as a primer on cosmic strings, domain walls (the shell-like mass described here) and using wormholes for time travel.

Basically covers all of the funky science described in this article

[–] Revan343@lemmy.ca 2 points 1 month ago (1 children)

It's also really well written. You'll have to read the rest of the Xeelee sequence afterwards though

[–] pyr0ball@sh.itjust.works 2 points 1 month ago

Agreed. My favorite is still Raft