Your Body Would Evolve Differently on Every Planet

[00:00:00]Gravity is literally the reason you will never look the same on another planet.

[00:00:04]Like your actual body would change shape depending on which world you stand on.

[00:00:11]>> On Mars, you weigh about 38% of what you weigh on Earth.

[00:00:16]Your spine would decompress, [music] you'd get taller, your face would puff up because your fluids shift differently in lower gravity.

[00:00:24]On a super Earth, something like two or three times our mass, you'd be shorter, stockier, and your heart would have to work way harder just to pump blood to your brain.

[00:00:35]>> Now, here's where it gets wild.

[00:00:38]If humans actually colonize different planets and stay there for thousands [music] of years, evolution kicks in.

[00:00:44]>> People on a low gravity moon develop longer, thinner limbs.

[00:00:48]People on a heavy world become compact and dense.

[00:00:52]Give it enough generations, and humans on different planets might not even recognize each other anymore. We'd literally [music] speciate. Same species split apart not by oceans or mountains, but by entire solar systems.

[00:01:08]>> So, when people talk about finding a new home in space, they skip the uncomfortable part. Leaving Earth doesn't just change where humanity lives.

[00:01:17]It changes what humanity becomes.

[00:01:19]Could you handle meeting a version of us that doesn't look [music] human anymore?

[00:01:24]Could you handle