Acordding to Einstein's Relativity, while Space-man lives for 1 day(just a number for example , not an exact number calculated from the corresponding relative speed), Earth-man can live for 1000 years (just an example number too). But from the view of Space-man, while Space-man lives for 1 day, Earth-man lives for 1 second. So while Space-man lives for 1 day, then how long does Earth-man live ? 1000 years or 1 second? Or 1000 years = 1 second actully ?！
Thank you in advance!!