Submit to FacebookSubmit to Google PlusSubmit to TwitterSubmit to LinkedIn

Lithopanspermia, sometimes referred to as interstellar panspermia, is a version of the panspermia hypothesis in which it is argued that impact-expelled rocks from a planet's surface serve as transfer vehicles for spreading biological material from one solar system to another. It requires that the microorganisms survive (1) the impact ejection process from the planet of origin; (2) traveling through space; (3) landing on a planet in another solar system.

Stephen Hawking - How Did Life Begin?

Stephen Hawking explains how life may have began on Earth, and turns to evolution to determine what extraterrestrial life may look like.

More Videos