On this day in the Star Trek universe:

Star Trek (1967 & 1968)

Star Trek: The Next Generation (1991)

Star Trek: Voyager (2000)

Star Trek

Season 1. Episode 21.

Episode entitled: The Return of the Archons.

Released February 9, 1967.

Directed by Joseph Pevney.

Written by Boris Sobelman, Gene Roddenberry.

Created by Gene Roddenberry.

Music by Alexander Courage.

Cast: William Shatner, Leonard Nimoy, Nichelle Nichols, DeForest Kelley, James Doohan, George Takei, Harry Townes, Torin Thatcher, Brioni Farrell, Sid Haig, Charles Macaulay, Jon Lormer, Morgan Farley, Karl Held / Christopher Held, Sean Morgan, Lev Mailer / Ralph Maurer, David L. Ross, Bill Blackburn, Bobby Clark, Frank da Vinci, Lars Hensen, Eddie Paskey, Ron Veto, Barbara Webber.

Star Trek

Season 2. Episode 20.

Episode entitled: Return to Tomorrow.

Released February 9, 1968.

Directed by Ralph Senensky.

Written by John T. Dugan / John Kingsbridge.

Created by Gene Roddenberry.

Music by Alexander Courage, George Duning.

Cast: William Shatner, Leonard Nimoy, Nichelle Nichols, DeForest Kelley, James Doohan, George Takei, Majel Barrett, Diana Muldaur, Cindy Lou, Bill Blackburn, Frank da Vinci, Roger Holloway, Jeannie Malone, John Hugh McKnight, Eddie Paskey.

Star Trek: The Next Generation

Season 4. Episode 14.

Episode entitled: Clues.

Released February 9, 1991.

Directed by Les Landau.

Written by Bruce D. Arthurs, Joe Menosky, Bruce D. Arthurs, Ronald D. Moore, David Carren, J. Larry Carroll.

Created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Patrick Stewart, Jonathan Frakes, LeVar Burton, Michael Dorn, Gates McFadden, Marina Sirtis, Brent Spiner, Colm Meaney, Pamela Winslow Kashani, Rhonda Aldrich, Whoopi Goldberg, Patti Yasutake, Tom Knickerbocker, Majel Barrett, Joe Baumann, Michael Braveheart, Cameron, Debbie David, Elliot Durant III, Margaret Rose Flores, Kathy Hammers, Randy James, Kraig Kishi, Lorine Mendell, Joyce Robinson.

Star Trek: Voyager

Season 6. Episode 15.

Episode entitled: Tsunkatse.

Released February 9, 2000.

Directed by Michael/Mike Vejar.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Robert Doherty, Gannon Kenney, Bryan Fuller, Michael Taylor.

Based on Star Trek, created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Kate Mulgrew, Robert Beltran, Roxann Dawson, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Jeri Ryan, Jeffrey Combs, J.G. Hertzler, Dwayne Johnson/The Rock, Michael Bailous, Tarik Ergin, Peter Scott Harmyk, Joyce Lasley, Nichole McAuley, Tom Miller, Robin Morselli, Keith Rayve, Joey Sakata, Pablo Soriano.