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Cosmic Journeys : The Asteroid that Flattened Mars

Mopeder 2012/06/23 00:23:34
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  • drdos1943 2012/06/23 02:24:35
    drdos1943
    +5
    Great video!

    Mars has always been a fascination to us. A while back, a meteorite from Mars was discovered on earth that, when analyzed, was found to contain what seemed to be the remains of a bacterium.

    Mars is our next destination; but exploring the planet will be much more difficult than most realize. The gravity on the planet is about one third that of the Earth. If you weighed 150 lbs on Earth, you'd weigh 50 lbs on Mars. Even after a short stay, our bodies would adjust to the lesser gravity and our muscles would deteriorate to the point where the conditions on Mars would be normal for it. Our heart is a muscle. Upon returning to Earth, it would be as if you now weighed three times normal. You probably would not even be able to stand up and you'd most likely have a heart attack within a few minutes. That is exactly what happened to a Russian Astronaut after having spent a few months in the zero gravity of being in orbit.

    However, in orbit or in outer space, it is easy to produce artificial gravity just by spinning the space station or the space craft. It is impossible to do that on a planet. So, if one were to stay on Mars for a while or if one were born on Mars, he/she could never return to Earth.

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  • drdos1943 2012/06/23 02:24:35
    drdos1943
    +5
    Great video!

    Mars has always been a fascination to us. A while back, a meteorite from Mars was discovered on earth that, when analyzed, was found to contain what seemed to be the remains of a bacterium.

    Mars is our next destination; but exploring the planet will be much more difficult than most realize. The gravity on the planet is about one third that of the Earth. If you weighed 150 lbs on Earth, you'd weigh 50 lbs on Mars. Even after a short stay, our bodies would adjust to the lesser gravity and our muscles would deteriorate to the point where the conditions on Mars would be normal for it. Our heart is a muscle. Upon returning to Earth, it would be as if you now weighed three times normal. You probably would not even be able to stand up and you'd most likely have a heart attack within a few minutes. That is exactly what happened to a Russian Astronaut after having spent a few months in the zero gravity of being in orbit.

    However, in orbit or in outer space, it is easy to produce artificial gravity just by spinning the space station or the space craft. It is impossible to do that on a planet. So, if one were to stay on Mars for a while or if one were born on Mars, he/she could never return to Earth.
  • Ivan 2012/06/23 02:09:39
    Ivan
    +2
    If you believe the multiverse theory (that all possible paths will play out in split time-lines), then imagine a whole different inhabitable world right by that Earth and the way society would be with this implication. I would love to see such a world...
  • Jim 2012/06/23 01:00:32
    Jim
    +1
    Interesting and well presented. Thank you for sharing.
  • Mopeder 2012/06/23 00:59:01
  • Inquisitve Kat 2012/06/23 00:58:41
    Inquisitve Kat
    Maybe we're witnessing the death of a planet.
    Fascinating video!
  • Mopeder Inquisi... 2012/06/23 01:01:27
    Mopeder
    +1
    Could be. Still an amazing place.

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