Or did Mars' smaller size prevent such a formation ... Understanding the interior structure of planets in our solar system is critical to developing ideas about how they form, grow, and evolve. Prior ...

Did life really exist on Mars after all? Unfortunately, there is no conclusive evidence for this yet. Nevertheless, it would ...

Did Mars' water escape underground, where it dwells today in vast amounts? Some scientists aren't so sure. Scientists are confident Mars was once abundant with water, as seen in massive flood-carved ...