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Venus, Earth, Mars????

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is it possible that Venus was where we were, and Mars is where we are headed? how long would it take for that to occur? should we be focusing on Mars? or should we really be focusing on Venus as an extra planet in case we ever have to leave earth?

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  1. mars would be a very bad choice

    1. The planet is covered in rust.

    2. Too cold

    venus is even worse

    1. X-TREMELY TOO COLD

    2. Methane=bad

    Titan(saturn moon) good choice

    1. WATER

    2. Decent temperature ranges

    3. Small and rocky perfect for a back-up colony locale


  2. No. Mars, Venus, and Earth were very similar at one point. Venus was too close to the Sun so it warmed itself into a cauldron of greenhouse gasses. Mars was too far away so its core cooled until its dynamo core shut down and allowed for solar winds to blow its atmosphere away. Earth was in the perfect spot.

    There is no progression from one planet climate to another. We started from the same spot and took different routes.

  3. all those are myths

  4. Jupiter is the solar system's gravitational bully.  It keeps the other objects in orbital resonance with it.

    As the Sun expands into a Red Giant, it will shed considerable mass.  At that time, all the planets will have their orbits expand.  That won't save the Earth, however.  We'll have to do that.

    Venus is probably livable now.  The upper atmosphere has an altitude with temperatures and pressures we know and like.  We could live in balloon cities in the clouds.  Very romantic.  Well, that's Venus for you.  Mind the sulfuric acid, though, and bring your own air to breath.  Oxygen can be pulled from the abundant CO2.  Not sure where we'd get nitrogen.

    It's hard to imaging that we'd s***w up the Earth so bad that it's worth going anywhere else.  Neither Venus and Mars have much of a magnetic field.  Without that, there's going to be a serious radiation problem.

    Still, i'd like to see both Venus and Mars become habitable.  I expect it to take at least several hundred years.  And seeing it would mean i've lived at least that long.  Time enough for my hobbies.

  5. yes we should focus on our planet or try making it better

  6. we don't have to focus on a dead planet like mars when we have a living planet like this earth, which will support life for billions of years.
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