Celestia Forums

http://www.nasa.gov/mission_pages/mars/main/index.html

Very cool. They have found recent evidence for those gullies on Mars.

That link will become outdated before too long, since it's to the top page. Here's the actual article.

http://www.nasa.gov/mission_pages/mars/news/mgs-20061206.html

There are two locations cited, and if you look at the hi-res images it seems pretty clear that there was definitely flowing liquid of some sort.

Just as intriguing are the images of new craters on the surface, and the degree of impacting that this implies for modern-day Mars. It is especially interesting to think, then, what this means for those regions which are relatively crater-free....

...John...