Extras

Video thumbnail: NOVA Five Facts About the Red Planet

NOVA

Five Facts About the Red Planet

Getting to know our red celestial neighbor.

Five Facts About the Red Planet

Video thumbnail: NOVA The Planets: Mars Preview

NOVA

The Planets: Mars Preview

Before it was a dry planet, Mars was a wet world that may have hosted life.

The Planets: Mars Preview

Video thumbnail: NOVA Mars, the Red Planet, Was Once Blue

NOVA

Mars, the Red Planet, Was Once Blue

Mars once had rains, rivers, and in the northern hemisphere, a vast sea.

Mars, the Red Planet, Was Once Blue