antimatter propulsion
https://www.wired.com/story/physicists-learn-to-superfreeze-antimatter-hint-pew-pew/
below was noted here 10-01-2021
https://github.com/c4pt000/Time-Dialation-temporal-spatial
01-05-2022
https://home.cern/news/news/physics/base-breaks-new-ground-matter-antimatter-comparisons