All seasons

10 seasons - 92 episodes

Season 9 2015

6 episodes - Apr 18, 2015

Season 8 2014

4 episodes - Mar 1, 2014

Season 7 2012

7 episodes - Apr 29, 2012

Season 6 2011

7 episodes - Oct 25, 2011

Season 5 2010

8 episodes - Jul 29, 2010

Season 4 2009

12 episodes - Aug 18, 2009

Season 3 2008

12 episodes - Nov 11, 2008

Season 2 2007

18 episodes - Nov 27, 2007

Season 1 2007

14 episodes - May 29, 2007

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.