3 ms·

not to piss on your parade, but can you explain this? thnx http://www.flickr.com/photos/europeanspaceagency/3694512868/ http://www.flickr.com/photos/europeansp

by ionwake 14y ago

not to piss on your parade, but can you explain this? thnx http://www.flickr.com/photos/europeanspaceagency/3694512868/ http://www.flickr.com/photos/europeanspaceagency/3694512868/

001sky 14y ago
http://www.flickr.com/photos/europeanspaceagency/3694621916/in/photostream/ http://www.flickr.com/photos/europeanspaceagency/3694621916/... Check the lat/long co-ordinates.
- jpxxx 14y ago
  Oh ya, there's still a bit of ice water on the surface. Also a large quantity at both poles (primarily on the South pole, whereas frozen CO2 tends to collect more on the North pole). There's even evidence of temporary crater puddles on nice days. But it's a very small amount of the suspected former total (perhaps 10% to 1% or much less). Assuming that the Martian canyons and valleys that appear to be carved out by water were actually carved out by water, they were absolutely torrential floods - of a scale unlike ever seen on Earth. Now? Ice glaze. Polar snow flurries. Underground ices. Hypersaline water tables, perhaps. Dusty crusty dune ice at the poles. It's not so much that the Martian hydrosphere isn't present, it's that it doesn't resemble ours much at all. And figuring out how life might fit into the present day is tricky: Mars is essentially a much drier and colder Antarctica.
novaleaf 14y ago
i don't see how some icy materials in the perm shadow of a crater pisses on his parade....
verelo 14y ago
Like others have said, its not unexpected that some water remains, however its also possible (especially due to its location) that the object that caused this impact was made of ice. I'm not sure if Mars suffers impacts from it, but impacts from sources such as the Oort Cloud (http://en.wikipedia.org/wiki/Oort_cloud http://en.wikipedia.org/wiki/Oort_cloud) often contain ice and other materials. There are other examples if you search around. The universe is a big and crazy thing, the possibilities of what can and have happened are almost endless.
ChuckMcM 14y ago
Wouldn't that be pithing on your parade? :-) An article from 2007 on the debate : http://www.newscientist.com/article/dn12026-mars-rover-finds-puddles-on-the-planets-surface.html http://www.newscientist.com/article/dn12026-mars-rover-finds... there are still some that believe at 'just the right time and place' you could get liquid water on the surface, but everyone seems to think it would be short lived.

by ionwake 14y ago

not to piss on your parade, but can you explain this? thnx http://www.flickr.com/photos/europeanspaceagency/3694512868/ http://www.flickr.com/photos/europeanspaceagency/3694512868/

001sky 14y ago

http://www.flickr.com/photos/europeanspaceagency/3694621916/in/photostream/ http://www.flickr.com/photos/europeanspaceagency/3694621916/... Check the lat/long co-ordinates.

jpxxx 14y ago
Oh ya, there's still a bit of ice water on the surface. Also a large quantity at both poles (primarily on the South pole, whereas frozen CO2 tends to collect more on the North pole). There's even evidence of temporary crater puddles on nice days. But it's a very small amount of the suspected former total (perhaps 10% to 1% or much less). Assuming that the Martian canyons and valleys that appear to be carved out by water were actually carved out by water, they were absolutely torrential floods - of a scale unlike ever seen on Earth. Now? Ice glaze. Polar snow flurries. Underground ices. Hypersaline water tables, perhaps. Dusty crusty dune ice at the poles. It's not so much that the Martian hydrosphere isn't present, it's that it doesn't resemble ours much at all. And figuring out how life might fit into the present day is tricky: Mars is essentially a much drier and colder Antarctica.

novaleaf 14y ago

i don't see how some icy materials in the perm shadow of a crater pisses on his parade....

verelo 14y ago

Like others have said, its not unexpected that some water remains, however its also possible (especially due to its location) that the object that caused this impact was made of ice. I'm not sure if Mars suffers impacts from it, but impacts from sources such as the Oort Cloud (http://en.wikipedia.org/wiki/Oort_cloud http://en.wikipedia.org/wiki/Oort_cloud) often contain ice and other materials. There are other examples if you search around. The universe is a big and crazy thing, the possibilities of what can and have happened are almost endless.

ChuckMcM 14y ago

Wouldn't that be pithing on your parade? :-) An article from 2007 on the debate : http://www.newscientist.com/article/dn12026-mars-rover-finds-puddles-on-the-planets-surface.html http://www.newscientist.com/article/dn12026-mars-rover-finds... there are still some that believe at 'just the right time and place' you could get liquid water on the surface, but everyone seems to think it would be short lived.