12-14-2024, 10:03 PM
(12-14-2024, 03:00 PM)IdeomotorPrisoner Wrote: If a star is 45 lightyears away and you go .9999999 the speed of light the round trip only takes 14½ days for you.
Actually, one way would take about half a year longer than 45 years. "Lightyear" is both a distance and a measure of time. If you travel at the speed of light, it takes 45 years to get to that star. Proxima Centauri (nearest star) is 4.25 light years, so if you're traveling at a speed of .999999 lightyears, then it'll take about 4 years and 4 months. Round trip is 2 x 4.25 - about 8 years and 8 months if you just fly out, wave at the star, and head right back.
https://en.wikipedia.org/wiki/List_of_nearest_stars
