This weekend is relatively slow for space television fans. Highlights include the History Channel's four-hour Saturday afternoon look at UFOs and all-new X-Files and First Wave episodes

Syndicated: Check Local Listings

Earth:Final Conflict - Subterfuge The power struggle between Zo'or and War Minister T'than turns violent. (trailer)

4:00 AM Dark Skies (SciFi) - Strangers in the Night
Famously bizarre penultimate episode brings historical personalities like Colin Powell and Carl Sagan into the web of UFO and conspiracy elements. Confusing and paranoid, but some find it engrossing as well.

4:45 AM Mars Needs Women (Showtime Beyond)
Pioneering 1966 effort embodied an entire subgenre and cast teen idol Tommy Kirk as one of the estrogen-starved aliens. Yvonne Craig (TV's Batgirl) displays brains and beauty too as his earthly nemesis.

5:00 AM The Visitor (SciFi) - Reunion
The Visitor finds his wife (the lovely Barbara Bain) dying in a hospital while FBI agents watch the exits.

9:00 AM Mystery Science Theater 3000 (SciFi) - The Touch of Satan
Wizened witch-girl causes mayhem; behind the scenes, Mike and the robots learn about the quaint customs of walnut farming and wassailing.

2:20 PM Mars (Showtime Beyond)
Tense murder mystery/action flick set in a mining installation on Mars, whence the title.

5:00 PM Xtro 3: Watch the Skies (SciFi)
Robert Culp stars in otherwise forgettable alien-abduction thriller.

8:25 PM Mars (Showtime Beyond)
Tense murder mystery/action flick set in a mining installation on Mars, whence the title.

9:00 AM Battlestar Galactica (SciFi) - Lost Planet of the Gods
A plague forces Adama to head for Kobol, legendary homeworld of humanity and source of the disapora of the Twelve Tribes. Sadly, Boxey's mother gets killed. (final part of two)

10:00 AM Earth 2 (SciFi) - Moon Cross
Bad weather strikes, leaving the colonists at the mercy of Terrian marauders.

10:55 AM Star Wars: A New Hope (TBS)
One of the most beloved SF films of all time. Two robots, a large doglike creature and other galactic misfits band together to save a princess, blow up a space station and set the tone for other films to follow.

11:00 AM Star Trek (SciFi) - The Conscience of the King
One of Kirk's old friends warns him that genocidal dictator Kodos the Executioner is now pretending to be a Shakespearean actor.

3:00 PM UFOs Then and Now? (History) - The Innocent Years
First installment in a four-hour documentary series takes a page from Jacques Vallee's book, asking the question, "how long have we been reporting these strange things in the sky?" Imagery ranges from cave paintings to the 1947 Roswell incident.

4:00 PM UFOs Then and Now? (History) - Cause for Alarm
A special all-alarmist look at the UFO phenomenon promises "some of the most disturbing UFO sightings." Topics include Area 51 and a mysterious 1952 flyby over the White House.

5:00 PM UFOs Then and Now? (History) - Nightmare
Abuction and other close encounters, ranging from the testimony of Betty and Barney Hill to the 1976 Allagash camping trip.

6:00 PM UFOs Then and Now? (History) - Aliens and Contact. Final installment examines efforts to get in touch with anyone who might be listening. Topics include the Search for Extraterrestrial Intelligence (SETI) and the Mexico eclipse sightings of July 11, 1991.

8:00 PM Sphere (HBOPlus)
Dustin Hoffman, Sharon Stone and Samuel L. Jackson star as researchers who go underwater to investigate a large golden sphere that could have alien origins. Based on the book by Michael Crichton.

9:00 PM The X-Files (Fox) - Sein Und Zeit
New episode! Mulder gets some answers to lingering questions about the fate of his sister Samantha, along with a healthy dose of Heideggerian angst. (first part of two)