The Viking missions paved the way for future Mars missions and helped researchers understand the red planet’s climate and ...
A newly resurfaced NASA image has reignited speculation about the possibility of artificial structures on Mars. The photograph, which appears to show a near-perfect square formation on the planet’s ...
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 ...