On: Scott Kelly's DNA shows unexpected telomere lengthening after year in space

[dudus]

It means he didn't age as much.

[jeron → dudus]

on top of the time disparity caused by space travel, so not only did he not experience as much time as someone on earth, he also didn't age as much?

[manarth → jeron]

The time dilation from a year on the ISS would only be around 0.014 seconds [1][2], so sadly it's not the fountain of youth just yet.

[1] http://ideonexus.com/2009/02/17/how-much-does-time-dilate-fo...

[2] https://spaceflight.nasa.gov/station/crew/exp7/luletters/lu_...

[AnimalMuppet → manarth]

Time dilation is never the fountain of youth. You don't experience any more time. Yes, you live to a later calendar year, but if that's at the price of having fewer seconds per calendar year in which to live, what's the point?

[brianwawok → AnimalMuppet]

Haven't you seen Futurama? It's time travel.

[pizza → jeron]

Time dilation should be negligible at low speeds; the effect is gamma = (1-(v/c))^(-.5)

[ajnin → pizza]

You have a small error, gamma is actually (1-v²/c²)^(-.5) , which translates to about 10ms for his 1-year stay in the ISS.

[pizza → ajnin]

Oops, I knew that that looked too simple somehow.. thanks

[trendia → jeron]

Well I bet I can guess what Silicon Valley billionaires will be doing within a decade!