APOD: Metal on the Plains of Mars (2011 Jul 31)

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Expand view Topic review: APOD: Metal on the Plains of Mars (2011 Jul 31)

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by BMAONE23 » Tue Aug 02, 2011 4:54 pm

More than likely, the Sands of Time

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by muneca1289 » Tue Aug 02, 2011 12:00 am

jdj17 wrote:My only question is, who's going to clean that mess up?

gravity :lol:

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Beyond » Mon Aug 01, 2011 6:36 pm

Perhaps the "snacktime skunk" :?:
-skunk.png
-skunk.png (136.81 KiB) Viewed 1425 times

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by neufer » Mon Aug 01, 2011 5:04 pm

Image
jdj17 wrote:
My only question is, who's going to clean that mess up?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by jdj17 » Mon Aug 01, 2011 3:14 pm

My only question is, who's going to clean that mess up?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by wasinger » Mon Aug 01, 2011 9:29 am

davidgin50 wrote:Gosh!, why all the aggressively unpleasant posts?
Sorry guys, I was trying to be silly - guess that didn't come across very well in print. jerry and I were undergrads together at OU.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Chris Peterson » Mon Aug 01, 2011 6:36 am

nstahl wrote:As for where the crater might be, it's probably long gone; remember Mars has atmosphere and dust and dust storms. And freezing and thawing that can bring buried things to the surface.
A meteorite that size would not produce a crater. Depending on the nature of the ground it landed on, there might be a small impact pit, but the weathering mechanisms you list would rapidly eradicate such a feature.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Wolf Kotenberg » Mon Aug 01, 2011 1:39 am

Perhaps a visit to the Viking lander sites would also reveal things, maybe even some stunning things. I remember a DonalDuck cartoon that showed Pluto bringing a bone he had dug up, for Huey, Louey and Dewey. the next frame showed a crossection of theyr house and showed a gigantic dinosauer skeleton just a few more feet down. You never know. We need to send a John Deere backhoe to Mars.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by alter-ego » Sun Jul 31, 2011 11:30 pm

davidgin50 wrote:Gosh!, why all the aggressively unpleasant posts?
Well, the APOD shows a crash scene on Mars (a god of war)... Maybe it's fitting?

Seriously, the forum goes through cycles of postings that have an antagonistic feel. Remember, writing openly can lead to misinterpretations. Agreed, some posts are hard not to interpret as intentionally unpleasant, but they are not always that way.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by davidgin50 » Sun Jul 31, 2011 10:21 pm

Gosh!, why all the aggressively unpleasant posts?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by saturn2 » Sun Jul 31, 2011 9:06 pm

A meteorite of iron and nickel on Mars.
A device earthly of Opportunity rover on Mars.
Is it a encounter nearby of type 3 ? :)

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by moonstruck » Sun Jul 31, 2011 3:44 pm

nstahl wrote:
Wasinger wrote:I know it looks like a meteorite but how do you know it's composition? Huh, Jerry? How?

They examined it. Read about it here. As for where the crater might be, it's probably long gone; remember Mars has atmosphere and dust and dust storms. And freezing and thawing that can bring buried things to the surface.

The negativity that shows up here sometimes doesn't add anything worthwhile.


Don''t worry. School will start back soon :wink:

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by hpfeil » Sun Jul 31, 2011 2:40 pm

http://photojournal.jpl.nasa.gov/catalog/PIA07269

The Rover already did a spectral analysis of the meteorite to discover its composition. You can see the debris from its impact in the larger images at the above site. Low angle of incidence?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by neufer » Sun Jul 31, 2011 2:37 pm


Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by bystander » Sun Jul 31, 2011 2:26 pm

hstarbuck wrote:Don't mean to be nitpicky, but shouldn't it read "discarded the previous year during descent"? Last year would be 2010.
It's a repeat (as most Sunday's are) and the caption didn't get updated.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by rguyg » Sun Jul 31, 2011 2:22 pm

nstahl wrote:
Wasinger wrote:I know it looks like a meteorite but how do you know it's composition? Huh, Jerry? How?
They examined it. Read about it here. As for where the crater might be, it's probably long gone; remember Mars has atmosphere and dust and dust storms. And freezing and thawing that can bring buried things to the surface.

The negativity that shows up here sometimes doesn't add anything worthwhile.
So true; I grow tired of lame comments. But the meteorite looks to me, smaller than a basketball; like a football without the ends. Judging by the rivets and the grains of sand.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by nstahl » Sun Jul 31, 2011 12:26 pm

Wasinger wrote:I know it looks like a meteorite but how do you know it's composition? Huh, Jerry? How?
They examined it. Read about it here. As for where the crater might be, it's probably long gone; remember Mars has atmosphere and dust and dust storms. And freezing and thawing that can bring buried things to the surface.

The negativity that shows up here sometimes doesn't add anything worthwhile.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by orin stepanek » Sun Jul 31, 2011 12:22 pm

Oh my! An accident on Mars and no insurance. Better call the tow truck. :mrgreen:

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by neufer » Sun Jul 31, 2011 11:28 am

Benbrilling wrote:
Well, if it's a meteorite, where's the crater?
http://asterisk.apod.com/viewtopic.php?f=31&t=24549

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Wasinger » Sun Jul 31, 2011 11:00 am

I know it looks like a meteorite but how do you know it's composition? Huh, Jerry? How?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by fraserwhitbread » Sun Jul 31, 2011 10:03 am

It's not enough for us to litter earth, we have to litter other planets as well. Maybe we should keep our junk here at home and learn how manage our own world properly before we head to other ones.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Benbrilling » Sun Jul 31, 2011 6:45 am

Well, if it's a meteorite, where's the crater?

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by hstarbuck » Sun Jul 31, 2011 6:32 am

Don't mean to be nitpicky, but shouldn't it read "discarded the previous year during descent"? Last year would be 2010.

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by alter-ego » Sun Jul 31, 2011 5:51 am

bactame wrote:Looks like a couple of crushed beer cans in center of image.
Kind of reminds of of the Earth analogy: A tipped over backhoe with beer cans around it..

Re: APOD: Metal on the Plains of Mars (2011 Jul 31)

by Ann » Sun Jul 31, 2011 5:18 am

Humans litter everywhere! It's no excuse that space litters, too!

Ann

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