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 [News] To space, and beyond!, Assorted cool space news |
 May 16 2006, 06:20 PM
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#76
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Shadowrun Setting Nerd  Group: Banned Posts: 3,632 Joined: 28-June 05 From: Pissing on pedestrians from my electronic ivory tower. Member No.: 7,473  |
Why?
Because the U.S. has been subsidizing the Russian space program for 15 years. I figure the time for hesitation is over. |
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May 16 2006, 08:52 PM
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#77
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Moving Target Group: Dumpshocked Posts: 533 Joined: 23-July 03 From: outside America Member No.: 5,015 |
If the tree bears fruit, water it more.
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May 17 2006, 02:22 AM
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#78
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Running Target Group: Members Posts: 1,428 Joined: 9-June 02 Member No.: 2,860 |
...could you explain that? Are you saying subsidizing the Russians is good or bad? |
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May 17 2006, 04:30 AM
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#79
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Shadowrun Setting Nerd Group: Banned Posts: 3,632 Joined: 28-June 05 From: Pissing on pedestrians from my electronic ivory tower. Member No.: 7,473 |
I'm saying invest in the spaceports you have.
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May 17 2006, 05:49 AM
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#80
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Target Group: Members Posts: 63 Joined: 2-April 06 Member No.: 8,426 |
1: grab an asteroid (how is beyond me and up to the eggheads at AresSpace to decide)
2: move it to the LaGrange Point (The point where the earth and the sun's gravitational puls negate each other, so stuff doesen't move). 3: ... 4: Profit! |
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May 17 2006, 06:57 AM
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#81
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Shadowrun Setting Nerd Group: Banned Posts: 3,632 Joined: 28-June 05 From: Pissing on pedestrians from my electronic ivory tower. Member No.: 7,473 |
3. Then a miracle occurs. |
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May 17 2006, 11:37 AM
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#82
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Running Target Group: Members Posts: 1,428 Joined: 9-June 02 Member No.: 2,860 |
So...keep investing in existing Russian and American spaceports? |
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May 17 2006, 06:12 PM
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#83
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Runner Group: Members Posts: 2,556 Joined: 26-February 02 From: Seattle Member No.: 98 |
I think the implication is that the Russians have their spaceports, and we have ours, and we should be investing in the ones we have.
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May 18 2006, 11:16 AM
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#84
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Running Target Group: Members Posts: 1,428 Joined: 9-June 02 Member No.: 2,860 |
I got that impression, but I wanted to be sure before I responded. |
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May 19 2006, 06:20 AM
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#85
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Target Group: Members Posts: 58 Joined: 9-May 06 From: Right behind you! Member No.: 8,538 |
wrong article: a LaGrange point is more accurate. There are 5 Lagrangian (also libration) points for a two-body system orbiting a fixed point, like the earth-moon-sun combination. L1 and L2 are closest; L4 and L5 have better gravitational advantages (Unlike L1 and L2, they're 'uphill' from everywhere else in the immediate system, making them ideal from a military standpoint as the top of a gravity well is the ultimate high ground). L3, on the far side of the sun, is pretty suboptimal no matter which way you look at it. (I suppose you could be hiding something from prying eyes) |
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May 19 2006, 08:37 PM
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#86
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Running Target Group: Members Posts: 1,028 Joined: 9-November 02 From: The Republic of Vermont Member No.: 3,581 |
The Earth/Luna/Sol system, you may note, is actually a three-body system, and, as such, gives you ten Lagrange points, five each anchored by Earth-Luna and by Earth-Sol.
The big advantage of L4 and L5 (those're 60 degrees ahead and behind the smaller body, in the same orbit) is that they're stable... L1 through L3, if you nudge something even slightly off it, it'll no longer be in a stable configuration, and it will continue to slide away. If you nudge something off L4 or L5, the mechanics of the orbit will cause it to self-correct... it'll slide back, and end up in a close orbit around the actual Lagrange point. And the gravitational influence of other bodies in the system - especially Jupiter - means enough nudging that if you want something to stay at one of the unstable Lagrange points, it's going to have to do active station-keeping (not as much as it would at a random point in space, but some). Things just naturally fall into the L4 and L5 points and stay there, however... there are quite a few asteroids and moons in the system that hang out around the L4/5 points of various bodies. The unstable ones have their uses, though... for example, NASA's got a solar observatory satellite parked at the Earth-Sol L1 (between Earth and Sol), where it gets an uninterrupted view of the sun. |
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May 20 2006, 01:56 AM
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#87
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Running Target Group: Members Posts: 1,428 Joined: 9-June 02 Member No.: 2,860 |
Well, while we're nitpicking on LaGrange knowledge... :)
They're stable if the two bodies forming them differ in mass by more than a factor of 25. For example, the Earth is 81 times more massive than Luna, so its L4 and L5 points are stable. However, the Pluto-Charon L4/L5 points are not.
They're also waystations on low energy, low speed routes through the solar system. |
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