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Rover Video of Mars "Dust Devil"
You've probably seen dust devils swirling about on a windy day. They're basically mini-tornadoes that form when turbulent air sucks up some dust or snow or other debris into a column. Usually they're only a few feet high, but sometimes they can be much, much larger.
On Mars, apparently, they can apparently be several kilometers high, as attested by the above image captured by Spirit, one of the Mars Rovers. The animation (based on a series of pictures and available in a larger version here) shows a dust devil travelling from left to right across the Martian landscape. The surface there is so dusty that these columns of air are particularly noticeable, even from sattelite images as shown in this NASA article on the subject.
This is a graphic display that Mars does indeed have an atmosphere, and a strong one at that, despite having less than one percent of the pressure of our atmosphere here on earth.
The footage is a few months old, but we're huge Mars nuts and haven't seen it yet. If anybody's got any other similar clips or links to similar videos, let us know below.
From NASA
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Comments
51
Subscribe to commentsjust meNov 1st 2007 10:18AM
South Carolina Grammar Rules:
PERSONALLY I BELIEVE THAT 5% OF US AMERICANS CANNOT USE ENGLISH GRAMMAR AND SPELLING BECAUSE THEY DO NOT HAVE BOOKS. AH, AND IF WE ARE GOING TO CONTINUE THE EDUCATION OF SOUTH AFRICA AND THE IRAQ IT IS, AH, IMPORTANT TO HAVE BOOKS. FOR THE FUTURE OF OUR SOUTH AFRICA AND THE IRAQ. THANK YOU.
Sean DobbsNov 1st 2007 10:18AM
That's pretty cool a tornado on mars where there's not supposed to be an atmosphere, has anybody else heard of proper grammer but me, more than half of you people can't even spell hmmm think about it learn to write "or type" and then post comments so the world doesn't think your all idiots,or maybe they're right maybe you all are.
FlavianaNov 1st 2007 10:34AM
What's the big spot to the left? The sun? What desolation!
ivansantosNov 1st 2007 10:48AM
BULL.. CHILDREN STUFF! HOW CAN BE?
VickyNov 1st 2007 10:41AM
there is.... I live there....
rich says:
I didn't know there were trailer parks on Mars!!
10/31/07 2:00 PM
sheetalNov 1st 2007 10:43AM
lets send all the sex offenders from earth to mars where they can all live happily ever after
BasseNov 1st 2007 11:00AM
Has to be tied to those lying DEMOCRATS/
"Dummycrats", ya know...
JesseNov 1st 2007 10:48AM
RE: Proper Grammar.
What's so wrong with using proper grammar and spelling when writing - even on a forum like this one? Is it beyond your capabilities, is that why you resent it? Is it too much effort for you to write properly to make a good example for the ignorant? OR, are you too stupid to write correctly, so you resent those who would challenge you to a higher standard?
It really does not take any special effort - unless you are unable to do so. If so, learn, and stop resenting those of us who would like to see illiteracy blotted out. Lazy or stupid or ignorant. None of those choices are good alternatives to correct English, are they?
undtektidNov 1st 2007 11:18AM
Jesse...so your saying doctors are stupid.....who cares about grammer were not writing a thesis........now back to mars please...
Jeff ENov 1st 2007 11:06AM
Jesse,
I don't think it's the asking people to post to a higher english standard that is the problem. It's the superior than now tone that the original poster used. As if to say, my post's have more credibility than yours, because I can articulate it better. Not everyone was blessed to have mommy and daddy pay for 4-12 yrs of higher education, not everyone was born with a silver spoon up their crotch. The fact is some people do have to work at proper english skills, because they weren't pampered from day one of their existence. It doesn't lesson their message though, and that's the point.
undtektidNov 1st 2007 1:45PM
Jeff E,
Word!