5 points
Is this the sort of negative mass that would possibly allow for stable wormholes and therefore time travel?
2 points
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
2 points
It’s also really well written. You’ll have to read the rest of the Xeelee sequence afterwards though
2 points
