<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>That'd make sense. The longest time spent in space was a little over a year by a Russian cosmonaught, IIRC. I would suspect being on a body with 1/3 of Earth's gravity would help, but we can't say for sure. <br /> Posted by baulten</DIV></p><p> </p><p>You mean "cosmonaut", of course. ;-) "Naut" comes from the same base as "nautical", but "naught" means "zero". </p><p> </p><p>The current single spaceflight endurance record is held by Dr Valeri Vladimirovich Polyakov. He's been up twice -- for 240.94 days starting August 29, 1998, and for a record-breaking 437.75 dats starting January 8, 1994. Both times, he served aboard Mir. Polyakov is number three for total spaceflight time, behind Sergei Avdeyev (three stints aboard Mir, the longest of which was 379.62 days, for a total of 747.59 days) and Sergei Krikalev (two flights to Mir, two aboard Shuttle and two aboard the ISS -- second Mir stint was 311.83 days -- for a whopping total of 803.40 days).<br /><br />There have been three missions in excess of one year, with one shared between two men, so there are four men who have been in space for over a year.<br /><br />Valeri Polyakov - 437.7 days aboard Mir<br />Sergei Avdeyev - 379.6 days aboard Mir<br />Musa Manarov - 365.9 days aboard Mir<br />Vladimir Titov - 365.9 days aboard Mir<br /></p> <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em> -- The Tenth Doctor, "Blink"</font></p> </div>