The Full Form of TNG is The Next Generation.

Star Trek: The Next Generation (TNG) is an American science fiction television series created by Gene Roddenberry. It originally aired from September 28, 1987, to May 23, 1994, in syndication, spanning 178 episodes over seven seasons. The third series in the Star Trek franchise, it is the second sequel to Star Trek: The Original Series. Set in the 24th century, when Earth is part of the United Federation of Planets, it follows the adventures of a Starfleet starship, the USS Enterprise (NCC-1701-D), in its exploration of the Milky Way galaxy.

In the 1980s, Roddenberry—who was responsible for the original Star Trek, Star Trek: The Animated Series (1973–1974), and a series of films—was tasked by Paramount Pictures with creating a new series in the franchise. He decided to set it a century after the events of his original series. The Next Generation featured a new crew: Patrick Stewart as Captain Jean-Luc Picard, Jonathan Frakes as Commander William Riker, Brent Spiner as Lieutenant Commander Data, Michael Dorn as Lieutenant Commander Worf, LeVar Burton as Lieutenant Commander Geordi La Forge, Marina Sirtis as counselor Deanna Troi, Denise Crosby as Lieutenant Tasha Yar, Gates McFadden as Dr. Beverly Crusher, and a new Enterprise. Roddenberry, Maurice Hurley, Rick Berman, Michael Piller, and Jeri Taylor served as executive producers at various times throughout its production. The series was broadcast in first-run syndication with dates and times varying among individual television stations. Stewart’s voice-over introduction during each episode’s opening credits stated the starship’s purpose, albeit altered to reflect an on-going mission: