Time's Arrow (Star Trek: The Next Generation)

"**Time's Arrow**"
"Time's Arrow"
Star Trek: The Next Generation episodes
	Data ponders his mortality
Episode nos.	Season 5 & 6; Episodes 26 & 1
Directed by	Les Landau
Story by	Joe Menosky
Teleplay by	Joe Menosky (Part I); Michael Piller (Part I); Jeri Taylor (Part II);
Featured music	Dennis McCarthy
Production codes	226 & 227
Original air dates	June 15, 1992; September 21, 1992;
Guest appearances
	Whoopi Goldberg - Guinan; Jerry Hardin - Samuel Clemens; Michael Aron - Jack London; Barry Kivel - Doorman; Ken Thorley - Seaman; Sheldon Peters Wolfchild - Joe Falling Hawk; Jack Murdock - Beggar; Marc Alaimo - Frederick La Rouque; Milt Tarver - Federation Scientist; Majel Barrett - Computer voice; Michael Hungerford - Roughneck; Pamela Kosh - Mrs. Carmichael; James Gleason - Apollinaire; Mary Stein - Devidian woman; William Boyett - San Francisco policeman; Alexander Enberg - Young reporter; Bill Cho Lee - Male patient;

"Time’s Arrow" is the 26th episode of the fifth season and the first episode of the sixth season of the American science fiction television series Star Trek: The Next Generation. It comprises the 126th and 127th episodes of the series.

Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. In this episode, an engineering team finds evidence that aliens visited Earth in 19th century San Francisco: Data's severed head, buried five hundred years ago.

The second part of the episode was nominated for three Primetime Creative Arts Emmy Awards, winning the award for Outstanding Individual Achievement in Hairstyling for a Series.