"Life On Mars" will be swapping nights with "Private Practice" beginning at midseason."Mars" will move to 10 p.m. Wednesdays, following "Lost" (and possibly "Pushing Daisies") to form a sci-fi block that night.
"Practice" will move to Thursdays at 10 p.m., where it will follow "Grey's Anatomy," the show from which it was spun off.
This is not the first time ABC has tried to form a sci-fi block on Wednesdays, having paired "Lost" with "Invasion" in 2005.














