On this day in the Star Trek universe:

Star Trek: The Next Generation (1993)

Star Trek: Voyager (1995)

Star Trek: Enterprise (2002)

Star Trek: The Next Generation

Season 6. Episode 23.

Episode entitled: Rightful Heir.

Released May 15, 1993.

Directed by Winrich Kolbe.

Written by Ronald D. Moore, James E. Brooks, Brannon Braga, René Echevarria, Naren Shankar.

Created by Gene Roddenberry.

Music by Jay Chattaway.

Cast: Patrick Stewart, Jonathan Frakes, LeVar Burton, Michael Dorn, Gates McFadden, Marina Sirtis, Brent Spiner, Alan Oppenheimer, Robert O'Reilly, Norman Snow, Charles Esten, Kevin Conway, Majel Barrett, David Keith Anderson, Martin Brümmerhoff, Cameron, Tracee Cocco, Inez Edwards, Arvo Katajisto, Diane Lee, Rad Milo, Joyce Robinson, Irving Ross, Dee Giffin Scott.

Star Trek: Voyager

Season 1. Episode 14.

Episode entitled: Jetrel.

Released May 15, 1995.

Directed by Kim Friedman.

Created by Rick Berman, Michael Piller, Jeri Taylor.

Written by Jack Klein, Karen Klein, Kenneth Biller, James Thomton, Scott Nimerfro.

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, James Sloyan, Larry Hankin, Majel Barrett, Johnetta Anderson, Derek Anthony, Kimberly Auslander, Jasmin Bischoff, John Copage, James Delano, Tarik Ergin, Norman Alexander Gibbs, Ken Gruz, Julie Jiang, Bob Mascagno, Jordan Monheim, Karole Nellis, Louis Ortiz, Tami Peterson, Rob Plaza, Heather Rattray, Richard Sarstedt, Daunette Saunders, Simon Stotler.

Star Trek: Enterprise

Season 1. Episode 25.

Episode entitled: Two Days and Two Nights.

Released May 15, 2002.

Directed by Michael Dorn.

Written by Chris Black, Rick Berman, Brannon Braga, Phyllis Strong, Michael/Mike Sussman, André Jacquemetton, Maria Jacquemetton, André Bormanis.

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 Jay Chattaway.

Cast: Scott Bakula, John Billingsley, Jolene Blalock, Dominic Keating, Anthony Montgomery, Linda Park, Connor Trinneer, Dey Young, Kellie Waymire, Rudolf Martin, Joseph Will, DonnaMarie Recco, James Ingersoll, Jennifer Williams, Geoff Meed, Stephen Wozniak, Dennis Cockrum, Toshiya Agata, Tom Archdeacon, Jef Ayres, Stephen Blackehart, Jane Bordeaux, Solomon Burke Jr., Diamond Dawn Cook, Dawn Drake, Alison Ebbert, Evan English, Susan Foley, Stacy Fouche, Hilde Garcia, Whitney Hall, Glen Hambly, Terita Jackson, Amina Julianna, John Jurgens, Lynne Langdon, Kevin Porter, Prada, Virginia Simonson, Dawn Stern, James R. Tweedell.