How Long Could You Survive on Other Planets?

How Long Could You Survive on Other Planets?


As far as we know, Earth is the only place
in our solar system where humans can survive without a spacesuit. So if we ventured outside the cushy confines
of our home, how long would we live on the other planets? Mercury, the closest planet to the Sun, is
actually not the hottest of the bunch, but it does have the most extreme variation of
temperatures. Scientists once believed Mercury was tidally
locked – meaning only one side of the planet faced the Sun which explains why one side
is so hot while the other is so cold. But Mercury does rotate, just incredibly slow. At its current rotational velocity, it takes
about 176 Earth days to experience one Mercurian day-night cycle. But you wouldn’t make it to the next day
because you would die in about two minutes due to freezing or burning up. Mercury’s neighbor, Venus, is often thought
of as Earth’s twin sister because of the planets’ similar size and composition. But, the grass isn’t greener on the other
side because well there is no grass at all. The planet’s atmosphere, composed mainly
of thick carbon dioxide, traps the Sun’s heat causing scorching surface temperatures
higher than 470 degrees Celsius. The excess amount of CO2 molecules scatter
the Sun’s light, staining the sky a reddish orange. You better take in that unusual view real
fast because it’s the last thing you’ll see since Venus will vaporize you in less
than one second. Mars is the hottest contender for humanity’s
future home, and living there will literally take your breath away. Despite its flaming red color, Mars is not
hot. The average annual temperature is minus 60
degrees celsius with a low of minus 153 degrees. The Red Planet’s barely there air will have
you begging for a breath, and silicate dust will begin to cloud your lungs. Within about two minutes Mars’s low atmospheric
pressure will cause your organs to rupture resulting in a quick but painful death. Jupiter is nice to look at but if you touch
it, you’ll die. As far as we know, the gas giant has no surface,
so your body will descend through cloud-like layers of mostly hydrogen and helium. As you fall deeper, temperature and pressure
will rise. But you won’t feel anything because the pressure killed you less than one second after arriving on the planet. Saturn is another work of universal art. Driving across those rings would be like Rainbow
Road in real life. Except not at all because Saturn’s rings
aren’t solid. They’re made up of billions of particles
that range in size and are almost entirely water ice. And you likely won’t find solid ground on
the planet itself. Like Jupiter, the gassy composition of Saturn
would swallow your lifeless body faster than the tick of a clock. Uranus and Neptune don’t offer any hope
of survival either. And you’d likely die of boredom on the way there, considering the billions of kilometers of travel anyway. The ice giants are made up of mostly swirling
fluids, but they get their blue hues from methane gas in their atmospheres, which would cause you to suffocate. On top of the toxic gas, the extreme temperatures
on both planets would contribute to a nearly instant death. We are pretty lucky to live on Earth. Our planet’s proximity to the Sun enables
water to exist in liquid form, regulates temperatures and provides energy for photosynthesis. Earth’s atmosphere has a perfect mix of
gases that allow us to breath and the planet’s relatively stable magnetic field keeps solar
storms from frying us to a crisp. So, be thankful for our planet and treat her
well, because no one wants to spend their entire life in a spacesuit. Space Crafts takes you through the depths
of the cosmos, explaining bizarre astronomical phenomena and crazy plans for future exploration. Check out other episodes like this one about
the quest for finding the mysterious Planet Nine. Thanks for watching Seeker! Don’t forget to subscribe.

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