Placeholder Image

Subtitles section Play video

  • 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.

As far as we know, Earth is the only place in our solar system where humans can survive without a spacesuit.

Subtitles and vocabulary

Operation of videos Adjust the video here to display the subtitles

B1 US planet mercury saturn sun earth jupiter

How Long Could You Survive on Other Planets?

  • 108 7
    Liang Chen posted on 2019/04/14
Video vocabulary