Add Yahoo as a preferred source to see more of our stories on Google. This image shows the globe of Mars set against a dark background. The disc of the planet features yellow, orange, blue and green ...

Did you know: While Mars may appear round, its true shape is subtly stretched and uneven, a product of its unique geological past and internal dynamics.

Despite its small size, Mars seems to have a huge impact on the orbital cycles that govern Earth’s climate, especially those ...