Time Squared (Star Trek: The Next Generation) Time Squared (Star Trek: The Next Generation) "Time Squared" is the 13th episode of the of the American science fiction television series "", the 39th episode overall. It originally aired on April 3, 1989, in broadcast syndication. The episode was written Kurt Michael Bensmiller and directed by Joseph L. Scanlan. Set in the 24th century, the series follows the adventures of the crew of the Federation starship "Enterprise". In this episode, the crew of the "Enterprise" encounter a double of Captain Picard, apparently from the future. While the Federation starship "Enterprise" is en route to their planned destination, ship's sensors
Descent (Star Trek: The Next Generation) Descent (Star Trek: The Next Generation) "Descent" is the 26th episode of the and the first episode of the of the American science fiction television series "", the 152nd and 153rd episodes overall. Set in the 24th century, the series follows the adventures of the crew of the Federation starship "Enterprise". The episode features a guest appearance by Stephen Hawking, making it the only episode to feature a guest star appearing as themselves on any "Trek" series. On the holodeck, Lt. Commander Data plays a game of poker with holographic representations of Sir Isaac Newton, Albert Einstein, and Stephen Hawking.