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Science
Air Date: March 16, 2009
ListenA near brush with cosmic disaster
Air Date: March 9, 2009
ListenWhat constitutes celestial death?
Air Date: March 2, 2009
ListenAir Date: February 23, 2009
ListenAir Date: February 9, 2009
ListenAir Date: February 2, 2009
ListenAir Date: January 26, 2009
ListenBack to basics: the moon, the sun and the stars
Air Date: January 19, 2009
Air Date: January 12, 2009
World clock jumps ahead by a second
Air Date: January 5, 2009