The Sci Fi Channel, still viewed by many as a niche network, is no longer a repository for failed fantasy shows cast aside by the broadcast networks. Instead, through a mix of original shows, movies and syndicated reruns (including old "Jericho" episodes but no new ones), the network has expanded its audience, especially among women, chiefly by stretching the definition of science fiction.

It is not just "Star Trek" or "Star Wars" that would fit the definition. Superheroes, Indiana Jones and even the baseball fantasy movie "Field of Dreams" would all be considered part of the genre as defined by Sci Fi's programmers.

"It's not just aliens, spaceships and the future," said Dave Howe, who was promoted to president of Sci Fi from general manager in January. "It's about asking that simple question, 'What if?'"

The changes evolved over several years. One result is a widening audience, especially among women. In April, for example, Sci Fi ranked sixth in cable networks in the 25-to-54 age group. Growth in female viewers outpaced that in men; 43 percent of Sci Fi's viewers are female.