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| Acmlm's Board - I3 Archive - General Chat - Forum Communities of the Solar System |
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Guy Perfect                   Since: 11-18-05 Last post: 6299 days Last view: 6297 days |
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| One of my other posts just now got me to thinking... If, hypothetically, other satellites of the sun were to be occupied by long-term visitors from our world, how would communications end up being configured? Surely even on Mars a modern citizen would go insane without his daily dose of Fox News and streaming videos of House. What kind of conventional setup would there be for astronauts to have access to their home away from home?
The planets orbit the sun as though they were all on a tabletop. Each orbital path is coplanar with the next, and the only thing that keeps planets from colliding is he distance each planet lies from the sun. Having said that, there comes a time every so often when Earth and Mars are 180 degrees opposite each other relative to the position of the sun. When that happens, you can say goodbye to any line-of-sight communications between the two celestial bodies. To circumvent this problem, quite literally, we could concievably launch into orbit an artificial satellite. Sounds like the stuff we already do, but the difference would be that the satellite in question would orbit the sun instead of Earth. Have it make a complete revolution in the same amount of time that Earth does, but make it 90 degrees off from where Earth is. That way, even when the planets are 180 degrees apart, there's still a little corner jutting out to the side that can be used to relay messages between both terrestrial balls. What do you guys think? If you were looking at your online buddy's house through a telescope, what kinds of technology do you think would be in place? |
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Milly Metal axe  mrew~We're downpouring again! Affected by 'wtf I'm posting Syndrome'   Since: 11-17-05 From: Mirabel, Québec, Canada Last post: 6314 days Last view: 6296 days |
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When they're on opposite sides, how far from each other would Earth and Mars be ... 300-400 million kilometers? Everything would just take forever to send and eventually time out, since it already takes about 8 minutes to go from Earth to Sun at lightspeed, meaning ping times would easily go over 15 minutes  |
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HyperHacker Star Mario Finally being paid to code in VB! If only I still enjoyed that. <_< Wii #7182 6487 4198 1828 Since: 11-18-05 From: Canada, w00t! My computer's specs, if anyone gives a damn. STOP TRUNCATING THIS >8^( Last post: 6297 days Last view: 6297 days |
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| Yeah, I think faster-than-light transport of at least data would be required before we see realtime interplanetary communication. | |||
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Guy Perfect Since: 11-18-05 Last post: 6299 days Last view: 6297 days |
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| That's just the kind of thing worth thinking about.
I did the research. Earth averages 93,000,000 miles from the sun, and Mars averages 141,500,000 miles from the sun. So we can figure that if Earth's distance from the sun is 1 unit (called an Astronomical Unit), then Mars would be 1.52 times Earth's distance from the sun... from the sun. It takes light from the sun 8 minutes, 18.60 seconds to get to Earth, which makes for 12 minutes, 37.87 seconds to reach Mars. With the two planets 180 degrees apart, it would take a linear 20 minutes, 56.47 seconds for light to go between them. But since the sun would be in the way, I proposed a satellite. Like I suggested, let's say the satellite orbits 90 degrees offset from Earth. And let's say that it lies exactly in the middle of the distances of the two planets; or 1.26 AU's from the sun. That means that at the 180 degree scenario, the satellite would be... let's see... 1.61 AU from Earth and 1.92 AU from Mars. That's a total of 3.53 AU for light to travel between the three objects, totaling in at 29 minutes, 20.06 seconds to get a message from one planet to the other. That's nearly an hour for ping time. On the other extreme, when the planets are closest to each other (0.52 AU apart), it would take a scant 4 minutes, 19.27 seconds to send a message between them without even using the satellite. All-in-all, real-time communication is out of the question. There will be no playing Halo 2 on Christmas Eve with your pals on Mars. Still, it's an interesting concept. What other things would we be able to do with long-delay internet on Mars that didn't involve instantaneous response? |
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HyperHacker Star Mario Finally being paid to code in VB! If only I still enjoyed that. <_< Wii #7182 6487 4198 1828 Since: 11-18-05 From: Canada, w00t! My computer's specs, if anyone gives a damn. STOP TRUNCATING THIS >8^( Last post: 6297 days Last view: 6297 days |
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| Well, TCP/IP as we know it would be useless in such a slow system. We'd have to use UDP or some other system that doesn't wait for a response.
As for potential applications, well... email... |
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Guy Perfect Since: 11-18-05 Last post: 6299 days Last view: 6297 days |
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| Google's already well on the way to archiving the entire internet as it happens. I suppose they could build a special Googleplex at the Martian colony and continuously upload information to it. That way, the Martial Googleplex would act as a sort of cache server that would allow people on Mars to surf the web instantly; it will just be maybe a half hour out-of-date. Depending on the needs of the people in the colony, certain sites would be given priority for transmission.
Even things like message boards would work out. I know there are exceptions, but people like me rarely post more than maybe four times a day. I don't think something like a forum would be much different from the way it is now. It's just that chat and the like would be tedious at best. |
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Jilkon Cappy  Since: 11-27-05 From: Teh Sweden Last post: 6378 days Last view: 6327 days |
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| Subspace communication plz. Or something along those lines. I'd have to say it seems like a pretty big job. | |||
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Guy Perfect Since: 11-18-05 Last post: 6299 days Last view: 6297 days |
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| How do you explain that subspace communication would work? Sci-fi sounds great on paper, but it's that -fi that keeps throwing things off. | |||
rubixcuber Mole  Since: 09-08-06 From: St. Louis, MO Last post: 6406 days Last view: 6406 days |
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| Information transmitted using entangled particles would be received instantaneously. Of course, the no communication theorem rules out the possiblilty of exploiting the Einstein, Podolsky, and Rosen Paradox to send information faster than light. But maybe someone will discover something along the same lines which will be of use. | |||
GeckoYamori Koopa  Since: 11-25-05 Last post: 6312 days Last view: 6297 days |
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I'm pretty sure a modern citizen goes insane with a daily dose of Fox News. |
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