Detecting Faster Than Light Travel by Extraterrestrials (hackaday.com) 15 points by rcarmo 2y ago ↗ HN
[–] bediger4000 2y ago ↗ Can we detect sublight speed, yet still relativistic, travel?Bussard ramjets, huge solar sails, do they have detectable signatures?
2 comments
[ 2.2 ms ] story [ 10.2 ms ] threadBussard ramjets, huge solar sails, do they have detectable signatures?