On this day in the Star Trek universe:

Star Trek: The Next Generation (1989)

Star Trek: Voyager (1996 & 1998)

Star Trek: The Next Generation

Season 2. Episode 18.

Episode entitled: Up the Long Ladder.

Released May 20, 1989.

Directed by Winrich Kolbe.

Written by 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, Diana Muldaur, Majel Barrett, Barrie Ingham, Jon DeVries, Rosalyn Landor, Colm Meaney, Dexter Clay, Fred Janos, Tim McCormack, Richard Sarstedt, Lainie Sims, Michael Stanhope, Floyd Weaver, Lloyd Weaver, Troy Weaver.

Star Trek: Voyager

Season 2. Episode 26.

Episode entitled: Basics, Part I.

Released May 20, 1996.

Directed by Winrich Kolbe.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Michael Piller, Lisa Klink.

Based on Star Trek, created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Kate Mulgrew, Robert Beltran, Roxann Biggs-Dawson, Jennifer Lien, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Brad Dourif, Anthony De Longis, John Gegenhuber, Martha Hackett, Henry Darrow, Scott Haven, Majel Barrett, Tarik Ergin, Heather Ferguson, Holiday Freeman, Jennifer Gundy, Susan Henley, Kerry Hoyt, Donald R. Jankiewicz, Pat Jankiewicz, Ken Lesco, Susan Lewis, Dennis Madalone, Mark Major, Lorin McCraley, Louis Ortiz, Spiro Razatos, Shepard Ross, Scott Strozier, Patricia Tallman, John Alex Tampoya.

Star Trek: Voyager

Season 4. Episode 26.

Episode entitled: Hope and Fear.

Released May 20, 1998.

Directed by Winrich Kolbe.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Brannon Braga, Joe Menosky, Rick Berman, Bryan Fuller, Lisa Klink.

Based on Star Trek, created by Gene Roddenberry.

Music by Dennis McCarthy.

Cast: Kate Mulgrew, Robert Beltran, Roxann Biggs-Dawson, Robert Duncan McNeill, Ethan Phillips, Robert Picardo, Tim Russ, Garrett Wang, Jeri Ryan, Ray Wise, Jack Shearer, Majel Barrett, Elle Alexander, John Austin, Terrence Beasor, Tarik Ergin, Ransom Gates, Kerry Hoyt, Diane Lee, Alicia Lewis, Joey Sakata.