On this day in the Star Trek universe:

Star Trek: The Next Generation (1989)

Star Trek: Voyager (1996 & 1998)

Star Trek: Enterprise (2005)

Star Trek: The Next Generation

Season 2. Episode 16.

Episode entitled: Q Who.

Released May 6, 1989.

Directed by Rob Bowman.

Written by Maurice Hurley, Melinda M. Snodgrass.

Created by Gene Roddenberry.

Music by Ron Jones.

Cast: Patrick Stewart, Jonathan Frakes, LeVar Burton, Michael Dorn, Marina Sirtis, Brent Spiner, Wil Wheaton, John de Lancie, Lycia Naff, Colm Meaney, Whoopi Goldberg, Majel Barrett, Rob Bowman, Michael Braveheart, Jeffrey Deacon, Maurice Hurley, Tim Trella.

Star Trek: Voyager

Season 2. Episode 24.

Episode entitled: Tuvix.

Released May 6, 1996.

Directed by Cliff Bole.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Kenneth Biller, Andrew Shepard Price, Mark Gaberman, Lisa Klink.

Based on Star Trek, created by Gene Roddenberry.

Music by Jay Chattaway.

Cast: Kate Mulgrew, Robert Beltran, Roxann Biggs-Dawson, Jennifer Lien, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Tom Wright, Simon Billig, Bahni Turpin, John Copage, Tarik Ergin, Holiday Freeman, Kerry Hoyt, Bob Mascagno, Louis Ortiz, John Alex Tampoya.

Star Trek: Voyager

Season 4. Episode 24.

Episode entitled: Demon.

Released May 6, 1998.

Directed by Anson Williams.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Kenneth Biller, André Bormanis, Bryan Fuller, Lisa Klink.

Based on Star Trek, created by Gene Roddenberry.

Music by David Bell.

Cast: Kate Mulgrew, Robert Beltran, Roxann Biggs-Dawson, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Jeri Ryan, Alexander Enberg, Susan Lewis, Majel Barrett, Tarik Ergin, Sylvester Foster, John Alex Tampoya.

Star Trek: Enterprise

Season 4. Episode 20.

Episode entitled: Demons.

Released May 6, 2005.

Directed by LeVar Burton.

Written by Manny Coto.

Created by Rick Berman, Brannon Braga.

Based on Star Trek, created by Gene Roddenberry.

Opening theme song: Faith of the Heart, performed by Russell Watson.

Closing theme: Archer's Theme, by Dennis McCarthy.

Music by Paul Baillargeon.

Cast: Scott Bakula, John Billingsley, Jolene Blalock, Dominic Keating, Anthony Montgomery, Linda Park, Connor Trinneer, Harry Groener, Eric Pierpoint, Peter Mensah, Patrick Fischler, Adam Clark, Steve Rankin, Johanna Watts, Tom Bergeron, Peter Weller, Christine Romeo, Alexandrea Ortiz, David Keith Anderson, Ron Balicki, Bill Blair, Scott Booker, Daphney Damaraux, Amy Earhart, Evan English, Tarik Ergin, Nikki Flux, Glen Hambly, Scott Sterling Hill, Dieter Horneman, Chase Hoyt, Michael Ivins, Janis Jones, Rafeedah Keys, Andrew Macbeth, Mark Major, Tom Miller, Melissa O'Keeffe, Alexander Xavier Ponce-Bonano, Linwood Porter, Jay D. Schwartz, Pablo Soriano, Trey Stokes, Ator Tamras, Henry T. Yamada.