ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Is Mars really as red as people say it is? – ...

People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often been called the red planet. Your blood is also red because of a mixture of ...

What can Mars’ red hue that’s been observed for thousands of years teach us about when water existed on its surface potentially millions, or even billions, of years ago? This is what a recent study ...

Mars has captivated scientists and the public alike for centuries, not only for the remote possibility of alien life, but also the planet’s reddish hue. But what exactly gives the planet its iconic ...

A recent photo from NASA's Curiosity rover gives an idea of what Mars would look like under skies that resemble our own on Earth. Take a look.

We’ve always known Mars as the Red Planet — but it turns out, we may have had the reason why wrong. If so, it could revise much of what we know about the history of our smaller neighbor planet. In a ...