time Approx. 42 minutes Broadcast Original channel The WB  (1999–2001) UPN  (2001–2002) Original run October 6, 1999 – May 14, 2002 Roswell  is an  American   science fiction   television series  developed, produced, and co-written by  Jason Katims . The series debuted on October 6, 1999 on  The WB  and moved to  UPN  for