David Brin on Nostr: The tachyon cosmological model is unlikely to pass rigorous experimental tests, given ...

The tachyon cosmological model is unlikely to pass rigorous experimental tests, given the unlikely nature of tachyons - particles that (in a weird aspect of relativity) might (notionally) move ONLY faster than light.

https://www.livescience.com/physics-mathematics/dark-matter/the-universe-may-be-dominated-by-particles-that-break-causality-and-move-faster-than-light-new-paper-suggests