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Maps Show Mars Was Once More Like Earth
vrioux writes "NASA scientists have discovered additional evidence that Mars once underwent plate tectonics, slow movement of the planet's crust, like the present-day Earth. A new map of Mars' magnetic field made by the Mars Global Surveyor spacecraft reveals a world whose history was shaped by great crustal plates being pulled apart or smashed together. ."
Earth not center of universe, other planets similar. News at 11!
I wouldn't be surprised to find that the majority of solid planets that we examine undergo the same basic geologic mechanisms. Tectonics, subduction, spreading, etc, are probably far more common in the universe than we think.
Be a real patriot: Question authority. Think for yourself. Formulate your own conclusions.
Seeing as how we do not behave exactly like every other animal...
Please tell me you're being facetious. I'm sure you'll find that no two types of animals behave *exactly* alike. However, a whole lot of them (including us), do exhibit many similar behaviours.
Be a real patriot: Question authority. Think for yourself. Formulate your own conclusions.
Rubbish. We came from the Pak homeworld.
In other words, no. We, as in humans, didn't come from Mars. We're definitely mammals, closely related to the other great apes. It's about as plain as you could ask for at every level from DNA right through to gross anatomy.
It is conceivable that life originated on Mars and spread to Earth in the days of nothing but single-celled organisms, but that's quite another matter.
Real Daleks don't climb stairs - they level the building.
Does that mean the Earth will end up like Mars in the future?
And how will this data help us terraforming Mars?
Far from answering, I think this only leaves us with more questions asked.
We're incredibly similar to every other animal - same basic chemistry, most of our genome the same. We have the same ancestors as every other living thing on this rock. A better (and open) question is whether all life on Earth is descended from (primitive) life that originated on Mars and was carried here by meteorites before Mars became uninhabitable.
I am trolling
Yes, yes you all did.
Now, if you breeders would simply shut up and let us Adults do the thinking, things would get better.
Sincerely, Brennan-monster.
Edward@Tomato - /home/Edward/ man woman
man: no entry for woman in the manual.
"Qua!?"
A better question? An open question? Really!?
Not meaning to troll, but how exactly would a meteor jump or ricochet off mars and impact Earth? The idea just seems damned far-fetched. And wouldn't the atmospheric burn leaving mars and impacting earth and months or years of hard vacuum time do a nice job of sterilizing most things? And if this idea you posit says earth's organisms needed to come from Mars, where'd Mars get 'em?! After all, any creation story that posits that it is 'monkeys all the way down' loses my confidence pretty damn fast.
Given the huge range of temperatures, minerals, electrostatic activity, etc. here on earth, seems easier to imagine various 'crawled out of primordial soup' origin theories to space debris carrying lucky spores or enzymes. I mean, I like my infinite-improbabilities when they come packaged in a world that rolls the dice a millions of times per second for a few billion years.
Again, I don't mean to troll. We can't prove or disprove what you're suggesting, but your suggestion starts with 3 or 4 soon-to-be-tested requirements (residue of life-supporting ecology on mars, evidence of life on mars, that life's genetic resemblance to earth life, matching timelines). I even like seeing scientific trial-ballons like yours. But your idea seems astronomically unlikely given the alternatives.