Finding Life Beyond Earth

00:18:04 It stays just long enough to grab a sample.

00:22:20 The collision is so violent it melts the surface

00:25:34 That last impact could fundamentally change

00:29:02 by the sublimation of ices and rocks.

00:33:01 NARRATOR: All life on Earth, from these bacteria to us

00:36:57 when comets, kicked out into the solar system

00:41:00 with no water, but in fact, Mars has lots of water--

00:44:17 on other planets within our solar system.

00:47:39 NASA is launching a Mars rover the size of a compact car

00:51:29 that are changing our understanding

00:55:40 Major funding for NOVA is provided by the following:

01:00:52 DAVIES: Walking across the surface of Io

01:04:50 a liquid like water.

01:09:01 is not unlike exploring another planetary body

01:12:27 this far out in the solar system.

01:16:48 it sees Enceladus silhouetted by the sun...

01:20:54 there is no evidence yet

01:24:33 perhaps even using different kinds of chemistry

01:28:31 and as a result we produce

01:31:46 It really changes our view of this universe.

01:36:04 EISNER: We're actually trying to map a detailed picture

01:39:44 Kepler is already producing mountains of data

01:43:31 that this chemistry and life here on earth

15:20:00 the samples return to Earth.