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05-22-2014, 10:23 PM | #1 |
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05-22-2014, 10:20 PM | #2 |
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I've thought about this a few times before.
I do not believe in the theory that there's a lot of civilizations out there who choose not to talk to us and who we can't notice. I also think the theory that civilizations naturally destroy themselves is dumb. Even if you think humans are assholes, some portion of intelligent species out there would be enlightened enough not to kill themselves. I believe there is a great filter, and that the filter is ahead of us. I think that filter is simply "unable to travel near the speed of light, and unable to warp space". If you can't travel near or faster than the speed of light, then the mind-boggling vastness of space really puts a damper on any civilization's ability to survive the death of their star, much less colonize other planets. If we're still alive when our star gets perilously close to cooking our planet during its red giant phase, I imagine we'll try sending out generation ships out of desperation, and they'll probably fail. The End.
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05-22-2014, 10:21 PM | #3 | |
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05-22-2014, 10:23 PM | #4 | |
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05-29-2014, 11:47 AM | #5 | |
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05-29-2014, 12:18 PM | #6 |
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That's not necessarily true, since we don't have proper physics to explain things happening at the speed of light. It's not possible to form a frame of reference for a photon. It has no detectable mass, and is traveling faster than c. We can't apply special relativity to a photon for those reasons. Our physics aren't complete enough yet. It might be better to say that at the speed of light, time in unable to yet be defined.
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05-29-2014, 12:33 PM | #7 | |
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05-29-2014, 12:39 PM | #8 |
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Yeah, me too. I expect that someday we'll reach a point where our definitions of light/mass/etc will be changed drastically because we're currently missing something important...
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05-30-2014, 01:42 AM | #9 |
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05-30-2014, 08:29 AM | #10 |
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I was fascinated by that too and did some experiments. It turned out that I just had a three-way bulb.
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05-29-2014, 12:50 PM | #11 | |
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And if we are talking about aliens in a ship instead of light photons, 100,000 years may have passed on the planet zebu, but said aliens in ship might have only experienced a few minutes. |
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05-30-2014, 03:32 PM | #12 | |
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hundreds or thousands of years may have passed by the time you reach your destination. Any way, I was just reading somewhere that scientists believe a warp drive that could get us to Andromeda in a few weeks is less than 30 years away. |
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05-30-2014, 04:19 PM | #13 | |
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Well, that would certainly be big news.
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05-30-2014, 04:52 PM | #14 |
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05-22-2014, 09:27 PM | #15 |
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Very cool article. I now have something to think about in the shower every day for the rest of my life.
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