Evolution (Star Trek: The Next Generation) neutronium as a result of a stellar explosion that occurs every 196 years and is due to occur in the next few hours. Stubbs plans to launch a probe, dubbed the Egg, to gather the data, a result of a lifetime's development. Meanwhile, Chief Medical Officer Dr. Crusher (Gates McFadden) has returned to her duties on the "Enterprise" after a stint at Starfleet Medical. As the expected time of the stellar explosion nears, the ship malfunctions in odd ways, and the issue is traced to the computer core. Acting Ensign Wesley Crusher (Wil Wheaton), who had been working on a
In Theory (Star Trek: The Next Generation) on VHS cassette, appearing on September 5, 1991, in the United States and Canada. The episode was later released on LaserDisc on September 24, 1996, and also included on the "Star Trek: The Next Generation" season four DVD box set, released in the United States on September 3, 2002. The first Blu Ray release was in the United Kingdom on July 29, 2013, followed by the United States on July 30. In Theory (Star Trek: The Next Generation) "In Theory" is the 25th episode of the of the American science fiction television series "", originally aired on June 3, 1991,