DailyDirt: Sailing Through Space Without Rockets

from the urls-we-dig-up dept

One of the problems with space travel is that the chemical fuels required to get around in space.. really limit how far a spacecraft can go. A spacecraft can only carry around so much fuel, and then once that fuel is gone, the ship is basically drifting in space. There are some creative solutions to this challenge, though. If you aren't in a hurry, you can try to propel an object with the momentum of light. Or you can shoot very small atoms at high velocity to create thrust. But you cannot change the laws of physics! After you've finished checking out those links, take a look at our Daily Deals for cool gadgets and other awesome stuff.
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Filed Under: em drive, ion thrusters, lightsail, planetary society, propulsion, rockets, satellites, solar sail, space, space exploration, spacecraft
Companies: airbus, boeing, kickstarter, nasa, spacex, thales alenia space


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  1. identicon
    cpt kangarooski, 20 May 2015 @ 5:16am

    Re:

    Spacesuits have had problems with flooding because they do contain water in the course of their ordinary use in space.

    Spacewalking is a very laborious activity because the suits are bulky, difficult to move in, and every movement requires the astronaut to brace against something to be effective. (For example, if you're floating and try to turn a bolt with a wrench, you'll just rotate yourself around unless you're braced on something) This means that spacesuits need water for astronauts to drink, because they get sweaty and dehydrated inside the suits (before the need for hand and footholds was recognized, astronauts on spacewalks were known to sweat so much trying to do simple tasks that they'd lose pounds of weight at a time). Also, people generate body heat and therefore need cooling. A suit of mesh underwear is worn under the suit and has flexible tubes filled with water running through it to help carry heat away to the life support equipment in the backpack (and thus provide cooling).

    And of course if there is a water leak inside the suit, because the water is weightless, it can't be made to just run down to the astronaut's feet or something. Even a small amount can float around the helmet (where the astronaut cannot reach to move it) potentially causing aspiration or even asphyxiation.

    The ISS is very real, it's even easy to see from the ground if you know where to look. And footage of astronauts in suits practicing underwater looks entirely different from footage of them in space.

    (Besides, if it were all a conspiracy, and God only knows what the point of that would be, why would the fact of water leaks -- presumably caused by water leaking in from a pool -- ever get revealed?)

    tl;dr -- you're an idiot

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