Battlestar Galactica is an Emmy Award-winning Canadian science fiction television series created by Ronald D. Moore that first aired in a three-hour miniseries in December of 2003 on the Sci Fi Channel . The show was created by David Eick and Ronald D. Moore as a re-imagining of the Battlestar Galactica television series from 1978 created by Glen A. Larson . The series first aired as a three-hour miniseries ( comprising four broadcast hours ) in December , 2003 on the Sci-Fi Channel , and ran for four seasons thereafter , ending its run on March 20 , 2009 .