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A freak accident during an experimental space mission catapults Astronaut John Crichton across a thousand galaxies to an alien battlefield.

The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite Air Force special operations team, one of more than two dozen teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, Replicators, and the Ori.

Four teenage boys get lost in the forest and discover, when they return home, that they are in an alternate world identical to theirs except for one startling difference - they were never born.

Years ago, the Taelons came to Earth, offering friendship and technology to humanity. But there are those who believe the Taelons have more sinister motives.

The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.

At Deep Space Nine, a space station located next to a wormhole in the vicinity of the liberated planet of Bajor, Commander Sisko and crew welcome alien visitors, root out evildoers and solve all types of unexpected problems that come their way.

The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.

The surreal misadventures of two best friends - a blue jay and a raccoon - as they seek to liven up their mundane jobs as groundskeepers at the local park.

A Librarian from the past time travels to the present and finds himself stuck here. When he returns to his castle, which is now a museum, he inadvertently releases magic across the continent. He is given a new team to help him clean up the mess he made, forming a new team of Librarians.

A group of teenagers go on a school camp in the Blue Mountains in Australia. While at the camp, Paul Reynolds accidentally goes into a parallel universe. This other world is inhabited by a more hierarchic and technologically different society, ruled by a group of people known as Spellbinders.

When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome powers. With such abilities at his disposal, Ben realizes a greater responsibility to help others and stop evildoers, but that doesn't mean he's above a little superpowered mischief now and then.

Dark Skies is an American UFO conspiracy theory-based sci-fi television series that aired from the 1996 to 1997 season for 18 episodes, plus a two-hour pilot episode. The success of The X-Files on Fox proved there was an audience for science fiction shows, resulting in NBC commissioning this proposed competitor following a pitch from producers Bryce Zabel and Brent Friedman. The series debuted September 21, 1996 on NBC, and was later rerun by the Sci-Fi Channel. Its tagline was "History as we know it is a lie."