An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

We also talk to a skiing legend breaking records in the sport. And we'll learn what scientists are finding might be behind Mars' bright red hue. All this and more on today's CNN 10!

Why is Mars red? But now a new study may have finally solved it once ... viral trends, politics, celebrities, sport, science, tech and identities. It's never boring, and is passionately progressive ...

Mars has fascinated people for centuries, not only because it is our closest neighbor in space but also because of its ...

Mars has been red for millions of years longer than previously thought, suggests new research. Get any of our free email newsletters — news headlines, sports, arts & entertainment, state ...