Our Ancestors, Elon Musk, And The First Car In Space

Our Ancestors, Elon Musk, And The First Car In Space
The SpaceX Falcon Heavy rocket lifts off from launch pad 39A at Kennedy Space Center on Feb. 6, 2018, in Cape Canaveral, Fla.

Musk's successful rocket launch is a step on the ambitious road to Mars; as with our adventurous ancestors, where we might go seems to be limited only by our imagination, says Marcelo Gleiser.

(Image credit: Joe Raedle/Getty Images)