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funbox
reply to post by Phage
just mere speculation Phage , kinda like this . but ill get back to you , ive been busy with the crayons
funBox
Char-Lee
because of the long thin tendrils...
"river" did you look at the full picture?
it looks just like a river down the road from me.
funbox
reply to post by Phage
just mere speculation Phage , kinda like this . but ill get back to you , ive been busy with the crayons
funBox
I don't know. But would simply smaller imply a weaker field? One may have to consider factors such as rate of convective movement within the molten core. So you can assume it was the case however, since Mars was able to maintain a significant atmosphere (without the solar wind stripping it away) for a couple of billion years, I'm not going to make that assumption.
firstly mars is smaller than earth I assumed a weaker magnetosphere , was I correct in my assumption?
It certainly does now. Mars lost its magnetic field a very long time ago and as a result, its atmosphere (which provides the primary source of protection from cosmic and solar radiation), and its water. But, billions of years ago, when Mars had a magnetosphere, a significant atmosphere, and liquid water on its surface, there isn't much reason to think that radiation levels on the surface were significantly higher that those of Earth. I don't see any particular reason to think evolution would have progressed at a much faster rate than on Earth.
secondly I assumed that a lot more radiation enters mars atmosphere than earth (our base of understanding)
Blue Shift
Here's a different tile. This one is obviously more (or less) weathered.
Underground tunnel entrance.
With those Photoshop skills I think a job at NASA is on the cards!
Phage
reply to post by Char-Lee
Underground tunnel entrance.
What good is an underground entrance?
Or an aboveground tunnel?
But with Earth as our "base of understanding" it would seem a broad assumption.
Phage
reply to post by funbox
I don't know. But would simply smaller would imply a weaker field? One may have to consider factors such as rate of convective movement within the molten core. So you can assume it was the case however, since Mars was able to maintain a significant atmosphere (without the solar wind stripping it away) for a couple of billion years, I'm not going to make that assumption.
firstly mars is smaller than earth I assumed a weaker magnetosphere , was I correct in my assumption?
It certainly does now. Mars lost its magnetic field a very long time ago and as a result, its atmosphere (which provides the primary source of protection from cosmic and solar radiation), and its water. But, billions of years ago, when Mars had a magnetosphere, a significant atmosphere, and liquid water on its surface, there isn't much reason to think that radiation levels on the surface were significantly higher that those of Earth. I don't see any particular reason to think evolution would have progressed at a much faster rate than on Earth.
secondly I assumed that a lot more radiation enters mars atmosphere than earth (our base of understanding)
No way of knowing of course, without evidence. But with Earth as our "base of understanding" it would seem a broad assumption.
edit on 2/7/2014 by Phage because: (no reason given)
ArMaP
Char-Lee
because of the long thin tendrils...
What "long thin tendrils"?
"river" did you look at the full picture?
Yes.
it looks just like a river down the road from me.
To me it looks nothing like a river, unless you call a piece of land with sand and rocks a river.