Party universe-style with the five videos below. And check out what the Planetary Society has planned for KPCC's Crawford Family Forum on Friday night. That is, if you're not too busy making an apple pie from scratch.
Symphony of Science - 'We Are All Connected' (ft. Sagan, Feynman, deGrasse Tyson & Bill Nye)
Carl Sagan Vs. The Matrix
Carl Sagan - 'A Glorious Dawn' ft Stephen Hawking (Symphony of Science)
It's Raining Tea, And Our Friends Fall Back To Earth
Carl Sagan explains "Googol"