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Originally posted by Phage
reply to post by VoidHawk
NASA would NOT send a craft all that way just to have the electronics zapped by static when they can so easily make the wheels - whether made of rubber or metal - discharge any potential before it has time to reach dangerous levels.
What dangerous levels? It doesn't take a lot of static electricity to get powder to cling.
Originally posted by Phage
reply to post by Dustytoad
The implication should be that Mars is a bit like Earth in that the top soil drys out protecting moisture underneath.. Not that the mars rover is turning over darker soil with no explanation as to why it's darker..
It's darker because it is of a different composition and texture than that on the very top layer.
edit on 9/11/2012 by Phage because: (no reason given)
dcmb1409 - Dust is electrostatically charged, but I don't think soil is. I'm no scientist, but happily I know some people who are.
When you see a picture that so obviously at least "looks" like mud or damp dirt on the rover pointed out by someone outside of NASA, why do you feel so compelled to say "NO, that's not wet, no chance, it's dry, static charge, that's the answer, end of story"? immediately when the picture suggest otherwise, instead of saying "hmmmm, that does kind of look like mud, I wonder if it is wet dirt or not"?
This isn't a beach. This isn't sand. It is dust. Very fine dust which is carried by the very thin Martian atmosphere. Let's put a layer of dust over that beach sand then roll over it.
NASA says this is an ancient lake bed. So just like that beach.......why would the sand one inch under the surface be of a different composition than the sand on the surface? It wouldn't be.
Really? Just dig down a tiny bit and you find moisture anywhere on Earth? Even the Atacama desert?
Logic dictates that just like on that beach, and just like dirt all over the world, under the dry dirt on the surface, it's more damp underneath because earth is a good insulator.
That is called snow.
Not if there isn't enough atmospheric pressure, it sublimates.
When snow melts, it turns into water.
Originally posted by grahag
I think this comes down to experience and the OP hasn't ever seen this phenomenon on ATV tires in the desert. I live in the desert and this is a common phenomenon. It's not wet, it's dry and that dust tends to clink to materials either through static or compression from a hard surface to a soft one.
It looks like muddy residue to him, but not to me.
Originally posted by Consequence
Originally posted by Larry L
What do you mean?
I thought I was being very clear. I mean there's no mud while you claimed that Curiousity just went through mud.
Did you even look at the images at good quality?
Of course I did.
There is clearly what looks like mud on the treads at the top of the wheels.
It's a thin layer of packed sand/gravel/dust.
"What looks like mud [to you]" does not equal "mud".
So what in the title is giving you such fits that you think I should be banned?
The completely false claim.
If it looks like mud, what else should I have put? H2O saturated dirt particles? You tell me?
How about "I think Curiousity went through mud"?
I'm posting from a PS3 because my PC is broken, so I can't use photo-shop to post a zoomed image, so for that I apologize.
Because pixelated "mud" is better? Just like in real life...?
But what I'm talking about is pretty clear.edit on 11-9-2012 by Larry L because: (no reason given)
Yes, it is clear what you are talking about. And it is clear that you are wrong. And it is clear that the topic is completely false.edit on 11-9-2012 by Consequence because: (no reason given)