TLDR: “All in all, the scientists argue that a combination of melting ice, sublimating carbon dioxide and high obliquity can help explain the pattern of gullies seen on Mars.”
The problem with the possibility of gullies on Mars is that these ravines mostly exist at heights where liquid water is not expected under the current Martian climate.
TLDR: “All in all, the scientists argue that a combination of melting ice, sublimating carbon dioxide and high obliquity can help explain the pattern of gullies seen on Mars.”
Yep … mainly because: