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  • What would it be like to travel to Mars and be one of its first colonists? well to get a small taste

  • National Geographic is sponsoring this video and sending me on a

  • Microgravity experience - a vomit comet

  • Come on this plane flies in a series of parabolic arcs so that if and everything inside can essentially be in freefall

  • creating a microgravity environment

  • the plane can also simulate the gravity on other bodies like the Moon and Mars

  • by modifying the parabola if I were really going to Mars I would experience not 30 seconds of microgravity as I do in this

  • plane but eight months of it and then when I got to Mars this would be the gravity on the surface

  • This is what it would be like to be on the surface of Mars there the gravity is only about

  • 37%

  • of what it is on earth which means you'd be able to jump

  • Much higher if you're an

  • Average jumper on earth you get double the airtime on Mars and have no problem at all dunking on a regulation basketball hoop

  • The

  • Moon, the gravity is only

  • 1/6 of what it is here on earth so you could really do a lot of

  • crazy

  • aerobics without being exhausted one major issue

  • With low gravity is that it's not very easy to exercise. I mean you're used to the fact that your arm weighs about

  • 5% of your body weight so just

  • Lifting your arm and regular G is a little bit of a workout you don't get any of that

  • when you are

  • Traveling to Mars and you only get a fraction of it when you're actually on Mars on a journey to Mars as on the space

  • station your muscles would weaken and shrink they would atrophy

  • Studies have shown that muscle mass can decrease by up to 20%

  • On space flights lasting just 5 to 11 days so you'd have to exercise

  • lifting weights would be useless

  • So you'd have to rely on

  • Elastic resistance for example on the space station astronauts are

  • elastically tethered to a treadmill and they typically exercise two and a half hours everyday

  • Even so the lack of weight pushing on bones results in a decrease in bone density

  • Astronauts can lose one to two percent of bone

  • Mass per month mostly in their lower extremities that's over 10 times faster bone loss than people on earth experience through

  • Osteoporosis as they get older and in weightless conditions other forces become significant like the surface tension of water

  • everyday activities become a lot more challenging, even things like washing your face Oh

  • probably gonna hat

  • That is crazy look at the surface tension the water holds it together like that

  • Dealing with liquids and microgravity is really difficult which makes showering brushing your teeth and going to the bathroom much harder

  • it's one of the most challenging things

  • I got just gonna up my nose

  • Got it in the absence of Earth's gravity you would

  • Also notice some strange effects like what happens when I spin this I showed how on earth this disc flips

  • Heaviside up when you spin it so I wanted to see what happens in microgravity right here

  • Do you see it flipping back and forth

  • did you see that

  • let me slow it down so you can see it better the disc actually flips back and forth

  • The hole goes from one side to the other and back

  • Watch which side of the disc the hole is on first its facing towards me and then it flips away from me and

  • Now it's towards me again and now it's away from me

  • This effect has

  • actually been seen on the space station with a t-bar handle it's an example of the intermediate axis theorem that is

  • Rotation about an intermediate axis not the least or a greatest moment of inertia is

  • Unstable and any tiny disturbance will cause it to rotate about another axis as well

  • in addition to dealing with microgravity on a trip to Mars you would

  • also

  • Be exposed to significant amounts of radiation when it's bedtime on orbit normally you fall asleep pretty quickly because because you're tired

  • but once in a while you have your eyes closed and you're not asleep yet and

  • you occasionally will see a flash of light it's some sort of

  • Human body reaction to the radiation from the universe

  • And we think it is heavy particles or

  • individual

  • Bursts of energy coming from radiation that are either going through the eyeball itself

  • Or going through the optic nerve a picture back to the first astronauts who must have closed their eyes and seen that radiation and going

  • I'm not going to tell anybody about this because

  • No, one's told me about I'm not talking I can just imagine the first two guys that said hey

  • I am sometimes I see flashes of light do you see flashes of light and then

  • Oh, we all see flashes alike. Oh okay, well that's that's alright then

  • to me all of these difficulties represent not deal breakers but challenges to be overcome for

  • Humans to guarantee our long-term survival we must become a multiplanetary species on mars

  • Simply stepping into a spacesuit which currently weigh as much as

  • 310 pounds would make you feel about as heavy as you are on earth

  • So, maybe you wouldn't feel like a basketball star after all but this would

  • also, allow you to maintain your muscle and bone mass

  • it's not that hard to shield yourself for radiation you can put it into the

  • Insulation of the ship you can use water of course it's a terrific radiation

  • Absorber so you can shield the ship but you can't ignore it and of course

  • One of the major challenges of different gravity is the nausea that it brings our bodies are not necessarily

  • evolved to be these different gravity situations

  • so, we've just gone through 50 parabolas I don't know if I could last many more before I start to

  • Lose, my breakfast you know what I'm saying

  • but you know our bodies evolved for millions of years in

  • 9.8. M/s^2 gravity

  • if we ever moved to Mars then actually established qualities and live there our evolution may take us in

  • very different directions

  • Thanks to the National Geographic Channel for sending me on this zero-g. Adventure it's truly awesome

  • Life on Mars may be closer than you think check out national Geographics new season of Mars on Monday November 12th at 9/8 central

What would it be like to travel to Mars and be one of its first colonists? well to get a small taste

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ZERO-Gで飲む!(他にも火星への旅への挑戦) (Drinking in ZERO-G! (and other challenges of a trip to Mars))

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    林宜悉 に公開 2021 年 01 月 14 日
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