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If you could emigrate to Mars, but could never come back to Earth, would you go?

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  • Originally posted by CerberusIV
    Atmospheric leakage? My memory of this is a bit hazy as it is several years since I studied it but isn't there a problem with the solar wind blowing away gases from the upper atmosphere. Most of the solar wind is deflected by Earth's magnetic field. So you need both gravity and a magnetic field to preserve an atmosphere.

    Earth and Venus have both and have atmospheres. Mars and the Moon don't have a significant magnetic field and don't have much in the way of atmosphere.
    [/COLOR]
    I've never heard this before. It's possible, but your examples are a bit off.

    Earth and Venus are similar masses.

    Mars has 0.107 earth mass
    Moon has 0.0123 earth mass

    I think that has more of an effect than lack of magnetic field.
    12-17-10 Mohamed Bouazizi NEVER FORGET
    Stadtluft Macht Frei
    Killing it is the new killing it
    Ultima Ratio Regum

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    • Now that he mentions it, I do remember that -- the..."erosion"...on unprotected atmospheres by the solar wind is quite significant.
      No, I did not steal that from somebody on Something Awful.

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      • KH, what is the atmospheric pressure at the surface of Mars in Earth equivalents of altitude, if you know.
        http://tools.wikimedia.de/~gmaxwell/jorbis/JOrbisPlayer.php?path=John+Williams+The+Imperial+M arch+from+The+Empire+Strikes+Back.ogg&wiki=en

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        • Originally posted by Whaleboy
          I second MrFun. Upon a satisfactory answer, I would quite happily go. This planet sucks and at least on Mars you will have winters that are ACTUALLY COLD!!!
          It has summers that are "ACTUALLY COLD!!!" as well.
          Christianity: The belief that a cosmic Jewish Zombie who was his own father can make you live forever if you symbolically eat his flesh and telepathically tell him you accept him as your master, so he can remove an evil force from your soul that is present in humanity because a rib-woman was convinced by a talking snake to eat from a magical tree...

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          • hm, summers which are cold... i like it. (i hate summer. got to be the only brazilian who hates summer)
            I watched you fall. I think I pushed.

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            • Cold like Antarctica on a cold day...-50 C...

              Tropical for Mars is 20 C...which is my favourite temperature...
              "Wait a minute..this isn''t FAUX dive, it's just a DIVE!"
              "...Mangy dog staggering about, looking vainly for a place to die."
              "sauna stories? There are no 'sauna stories'.. I mean.. sauna is sauna. You do by the laws of sauna." -P.

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              • i like -50, provided i have a female to make me feel warm
                I watched you fall. I think I pushed.

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                • MARS NEEDS WOMEN!
                  No, I did not steal that from somebody on Something Awful.

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                  • To answer the title: No, I've got a wife and a little girl whom I want to spend the rest of my days with.

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                    • The Mad Monk, I like your sig material. It looks like bfg9000 is a speech writer for Al Sharpton or Dennis Kucinich.
                      http://tools.wikimedia.de/~gmaxwell/jorbis/JOrbisPlayer.php?path=John+Williams+The+Imperial+M arch+from+The+Empire+Strikes+Back.ogg&wiki=en

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                      • Originally posted by Ned
                        KH, what is the atmospheric pressure at the surface of Mars in Earth equivalents of altitude, if you know.
                        In terms of altitude, no clue. Something like 50 kms?

                        It's about 1 kPa on average, IIRC. Sea level pressure is 101.3 kPa
                        12-17-10 Mohamed Bouazizi NEVER FORGET
                        Stadtluft Macht Frei
                        Killing it is the new killing it
                        Ultima Ratio Regum

                        Comment


                        • How cold does it have to be, exactly, for it to be 'actually' cold?
                          Britain's daytime temps this winter are rarely below 2 degrees C. I want to invent a time machine to go back to victorian days to skate on the Thames dammit!
                          "I work in IT so I'd be buggered without a computer" - Words of wisdom from Provost Harrison
                          "You can be wrong AND jewish" - Wiglaf :love:

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                          • 50 Kms?

                            It seems that even if Mars had oxygen, it would be far too thin to breathe -- even at the bottom of craters that appear to go 2 kms deep or more. Now, if they had a crater or rift 50 kms deep, we would feel right at home.
                            http://tools.wikimedia.de/~gmaxwell/jorbis/JOrbisPlayer.php?path=John+Williams+The+Imperial+M arch+from+The+Empire+Strikes+Back.ogg&wiki=en

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                            • Originally posted by Ned
                              50 Kms?

                              It seems that even if Mars had oxygen, it would be far too thin to breathe -- even at the bottom of craters that appear to go 2 kms deep or more. Now, if they had a crater or rift 50 kms deep, we would feel right at home.
                              Hence the need for terraforming. I imagine for several hundred years at least, Mars would be an anoxic environment. The top of Mons Olympus will probably always require environmental suits.
                              Christianity: The belief that a cosmic Jewish Zombie who was his own father can make you live forever if you symbolically eat his flesh and telepathically tell him you accept him as your master, so he can remove an evil force from your soul that is present in humanity because a rib-woman was convinced by a talking snake to eat from a magical tree...

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                              • Originally posted by Whaleboy


                                Britain's daytime temps this winter are rarely below 2 degrees C. I want to invent a time machine to go back to victorian days to skate on the Thames dammit!
                                It's -50 celsius with the windshield where I am. Want to trade places?


                                Actually, no. Living in britain isn't worth it.
                                Rethink Refuse Reduce Reuse

                                Do It Ourselves

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