Air date: 2007-05-29

An exhilarating voyage through the cosmos, from the farthest planets and stars in our solar system, back to the familiar face of our moon. Witness the sun's birth at the dawn of our solar system, and its death, billions of years in the future; explore the possibility of a human settlement on Mars; and learn about the devastating threats posed by the meteorites, comets, and asteroids that routinely collide with Earth.

Air date: 2007-11-27

Air date: 2008-11-11

Air date: 2009-08-18

Air date: 2010-07-29

Air date: 2011-10-25

Air date: 2012-04-29

Air date: 2014-03-01

Air date: 2015-04-18