Complex sentence: The show's first run aired from October 26,1981, to April 23,1982; while an updated version-called "The New Battlestars"-ran for 13 weeks, from April 4 to July 1,1983.
Split into simpler sentences: The show's first run aired from October 26,1981, to April 23,1982. An updated versiontitled "The New Battlestars" ran for 13 weeks, from April 4 to July 1,1983.