NASA’s Curiosity rover is seeking environments on Mars that could support life—or could have in the past. Earlier Mars missions found signs of water, but not organic carbon—life’s essential building block. Watch the Curiosity team prepare to hunt for carbon at Mount Sharp, which holds a geologic record hundreds of millions of years old.
Pictured: Curiosity’s double in the Mars Yard at the Jet Propulsion Laboratory in California. © Tania van Bergen