Ancient Mars may have been covered in ice: study

A new study suggests that Mars' ancient valleys were formed by glaciers rather than rivers, indicating a colder and icier past. Researchers compared these valleys to those on Devon Island, a terrestrial analog. The study proposes that glaciers created meltwater channels on Mars 3.8 billion years ago, potentially offering conditions favorable for ancient life by deflecting solar radiation.

What does the new study in Nature suggest about the formation of valleys on Mars?

How do the scientists compare the valleys of Mars to Devon Island?

What does co-author Anna Galofra say about Devon Island in relation to Mars?

According to the research, what would have been the effect of ancient glaciers on solar radiation?

What implications do the findings about ancient glaciers on Mars have for the possibility of ancient life?