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There are some interesting applications for a cavity at the center of a planetary body. But I don't think you'll have an easy time getting there. And I'm not sure you'll be able to preserve your tunnel once you've dug it - doesn't the Moon still have quakes? |
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gawd, that sounds filthy. |
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"During several of the Apollo missions, astronauts set up seismic instruments on the lunar surface to measure moonquake activity. The data from these instruments revealed that the Moon is very reverberant, with oscillations continuing for one hour or longer." lord knows where I found that... |
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For transportation porposes, it is sufficent to mearly drill a cord. (the geometric type) |
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\\the longest unhindered free fall in the solar system\\. Well you probably wouldn't land, so I suppose it's true. |
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Anyone else noticing a sudden influx of space related ideas? |
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I think the moon oscillates because it rings, like a bell. It is solid,with no jelly center to absorb energy. Without magma,or plates, could it have quakes? |
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*I* think it oscillates because the Venusians use it as a venue for line dancing. |
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If you aren't careful you are going to tunnel right through the secret base on the side we never get to see. |
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Moonquakes are caused by the friction between the wobbling vs jiggling of its custard centre. |
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You can't fall through it, because there would be nothing on the bottom to pull you through! You could however walk down it, side ways on the moon would become down, and the gravity would increase once the closer you got to the center. Let's see if the school hasn't blocked image shack so I can draw a crappy Paint picture and show you what I'm talking about... |
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//During several of the Apollo missions, astronauts set up seismic instruments on the lunar surface to measure moonquake activity. The data from these instruments revealed that the Moon is very reverberant, with oscillations continuing for one hour or longer." // [po] They dropped whole booster stages at orbital speeds or the jettisoned ascent module to get these reverberations. |
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//Actually, credible sources at Area 51...// |
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I don't know about the moon, but the oxymoron at the beginning of that sentence could reverberate for hours. |
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Damn, you [zen], ya beat me to it! |
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Lets see, we have oxymorons, why not hydromorons? Nitromorons? Had to say it... |
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You'd need a really long pin and big hammer to whack a hole through the moon. And, after you do so, it'd be in a different orbit. Let me know when you start, so I can get out of Jim's way. |
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You could fall through just fine. After you passed the center you would slow down as you neared the exit. You would pop right out at a fairly slow velocity and land right on your feet. I envision something like the beginning of Teletubbies, where they pop up and out of that hole then shimmy around. |
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Shimmy? Is that what they were doing? I never could figure those odd little things out. Did the tubbytoast power their televisions? |
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I pictured a rainbow
You held in your hands
I had flashes
But you saw then plan
I wondered out in the world for years
While you just stayed in your room
I saw the crescent
You saw the hole through the moon!
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I was about to post this very idea, except my moon-tunnel features a giant lens at each end to make the largest optical telescope in the known universe. |
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//the largest rocket launcher in the solar
system...// |
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How? Why? You stick a rocket at one end
of this tunnel and light the blue
touchpaper. It hurtles toward the moon's
centre, gaining a bit of acceleration due to
gravity (less so as it gets closer to the
centre). It then has to go out the other
side, thereby going back up the gravity
well and losing any advantage. No point. |
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//No point.// [MB], that's what I thought at first too... but re-thinking: On a big rocket you absolutely need a tremendous amount of thrust at launch because you have to lift all of the fuel that you're going to burn later. Here, getting all the fuel mass traveling is a freebie - you can burn the fuel before you ever have to lift it against gravity. |
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//Here, getting all the fuel mass traveling
is a freebie - you can burn the fuel before
you ever have to lift it against gravity.//
Errr, yes. I'm sure there's some problem
with this, but I'll leave it as an exercise to
the reader. |
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\\the longest unhindered free fall in the solar system\\
Theoretically, if someone fell into said hole and there was no resistance, they would fall to a point on the opposite side of the moon the same distance from the moon's center of gravity as the starting point. Then the same thing would happen repeatedly, forever. There actually would be some resistance (falling dust, solar wind, hitting the sides) but it would be small. |
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[EvilPickels]Think before you post stuff like that. There wouldn't have to be anything directly under you for you to fall - the mass from the sides would still pull you down. Also, if you walk down the side of the hole, the pull from the two halves of the moon would be nearly the same - almost cancelling each other out (the would be some difference between the two attractions, because you would be closer to the half you're walking on, but they would be pretty close). |
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//...they would fall to a point on the opposite side of the moon the same distance from the moon's center of gravity as the starting point.// |
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This could be used for nearly costless transportation to the opposite hemisphere of the moon. |
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[apocalyps] Actually, the technique doesn't have to pass directly through the center, which is I think is what [my-nep] was saying. As long as you can produce a sufficiently low friction transport vehicle (mag lev anyone?) any chord through the planet will work. And it can thus be used for transportation to any point on the planet(oid). |
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//And it can thus be used for transportation to any point on the planet(oid).// |
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Only if you turn the moon into swiss cheese. |
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