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  #31 (permalink)  
Old 11-February-2008, 06:42 PM
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Also, we re assuming that there isn't some kind of lethal concentration of gas in that atmosphere that would kill us, but they might be evolved to. Then again, if the pay off was a whole new planet, we could probably tweak the atmosphere a bit.
Well, the OP specified human-habitable. If so, we'd have settlements already, probably with at least one generation of children already born there. None of this go-to-the-Moon-a-few-times-and-then-sit-on-our-porch-for-five-decades nonsense.
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  #32 (permalink)  
Old 11-February-2008, 08:45 PM
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None of this go-to-the-Moon-a-few-times-and-then-sit-on-our-porch-for-five-decades nonsense.
I know. I bet there were alot of excited scientists, dreamers, explorers, visionaries and well, people like us who thought that that wa sit, the beginning of a new age. And then nothing for 50 years. What a let down. Too bad humanity is so short sighted.
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Old 11-February-2008, 09:04 PM
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On the plus side, we haven't had a nuclear holocaust.
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Old 11-February-2008, 09:08 PM
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And billions have been raised out of absoute poverty. (Or rather, raised themselves.)

But for many of us, we have been livng in a new age of space exploration. Mars, Jupiter, Saturn, Uranus, Neptune, Venus, Mercury, comets... All visited, all partially explored and we're still exploring.
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  #35 (permalink)  
Old 11-February-2008, 09:10 PM
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On the plus side, we haven't had a nuclear holocaust.
No, but that was luck, not skill. We sure had a couple of situations where we very easily could have. And the nukes that make it possible still mostly exist, so it's by no means totally ruled out.
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  #36 (permalink)  
Old 12-February-2008, 07:38 PM
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And the nukes that make it possible still mostly exist, so it's by no means totally ruled out.
Every time I think we're going to get along great because of our shared interest in comics, you go all pessimistic...
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Old 13-February-2008, 01:44 AM
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Every time I think we're going to get along great because of our shared interest in comics, you go all pessimistic...

I didn't say it will happen, just that it's possible. That's realistic caution, not pessimism.
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  #38 (permalink)  
Old 15-February-2008, 07:59 PM
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Many a book was written with this plot...
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  #39 (permalink)  
Old 16-February-2008, 12:18 AM
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I didn't say it will happen, just that it's possible. That's realistic caution, not pessimism.
Eh, it's okay. I don't hold negative emotions more than a few hours, tops. So, friends?
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Old 16-February-2008, 01:53 AM
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Eh, it's okay. I don't hold negative emotions more than a few hours, tops. So, friends?
Sure! I never thought otherwise.
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  #41 (permalink)  
Old 04-March-2008, 08:38 PM
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Lets say Venus was the tropical planet it was dreamed to be. In fact, it was, and sometimes still is, referred to as our sister planet. Just to be crazy, lets make it three. Venus, a vibrant but deadly world, home to mankind's newest nightmares. Earth, home of that multi-cellular plague, humanity, eager for a new host. And Mars, ancient, fragile, like the tundra, with lichen like plants growing on the bare rock.
It's so old-school, its new-school! ;D
I don't know about Venus, But Harry Turtledove wrote a book called:"A World Of Difference" about the Mars scenario.
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Old 21-March-2008, 06:40 PM
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This reminds me of the book A World Of Difference, which takes place in a history where Mars is larger, habitable, and called Minerva, and the last image sent by a NASA probe sent to the planet is of a creature swinging a stick.
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Old 21-March-2008, 06:58 PM
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This reminds me of the book A World Of Difference, which takes place in a history where Mars is larger, habitable, and called Minerva, and the last image sent by a NASA probe sent to the planet is of a creature swinging a stick.
Paul Hogans "Giants" series also referred to a planet Minerva in the solar system.

Supposedly, that is why the asteroid field remains today.

We know that the asteroid field does not contain enough mass to make up an appreciable planet- but I found the Minerva correlation interesting.
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  #44 (permalink)  
Old 21-March-2008, 07:41 PM
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Paul Hogans "Giants" series also referred to a planet Minerva in the solar system.

Supposedly, that is why the asteroid field remains today.

We know that the asteroid field does not contain enough mass to make up an appreciable planet- but I found the Minerva correlation interesting.
The asteroids-as-lost-planet concept was the predominant hypothesis up until the 1970's, and is widely referenced in early science fiction. Heinlein, Asimov, and "Doc" Smith all played with the notion.
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"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort
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  #45 (permalink)  
Old 21-March-2008, 07:52 PM
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The asteroids-as-lost-planet concept was the predominant hypothesis up until the 1970's, and is widely referenced in early science fiction. Heinlein, Asimov, and "Doc" Smith all played with the notion.
Well, that's good news for Hogan
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  #46 (permalink)  
Old 24-March-2008, 01:18 AM
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A system like Zeta Reticula would be a good candidate for multiple earth like worlds that are close enough for reasonable travel.

Even Alpha Centauri would be good, but a bit more tricky.

If you had beings, whose lifespans were, say centuries or thousands of years, who's to say a local cluster of stars isn't reasonable?
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Old 24-March-2008, 11:11 AM
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Dreaming like this just makes me sad... I want us to exist multiple places... if we want to survive as a species we must...

Now to add a twist... what if instead of having an inhabitable sister planet... we had a planet that rained destructive thread on us like Pern does... heh.
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  #48 (permalink)  
Old 24-March-2008, 08:15 PM
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Dreaming like this just makes me sad... I want us to exist multiple places... if we want to survive as a species we must...
Survive as a species? What do you mean by that? All species will go extinct. Our species probably won't survive the next 100,000 years, but say we did? Say we terraformed Mars and other parts of the galaxy. Suppose our species outlasted the lifespan of our star. Say we survive in other parts of the universe by then, say our species lasted until all even the red dwarfs burned out and the universe was in darkness hundreds of billions of years from now, only to be ripped about by dark energy and finally face extinction? Is that the goal of our species?
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In the Year 2525.

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  #49 (permalink)  
Old 24-March-2008, 09:50 PM
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Or maybe we would find a way to travel to other universes. if that became possible, then it appears there is no theoretcial limit to how long we survive. And even if we didn't, I am sure we would not go softly in to that good night, we will rage, rage against the the dying of the light. A species goal is to survive, until it can not.
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