Celebrate the 50th anniversary of Doctor Who, science fiction's longest-running TV show, with this exclusive art print of the TARDIS against a pale moon on a glorious night.

It was in 1963 when the British television series about a time-traveling humanoid alien, known as the Doctor, first aired. For decades we've tagged along with this Time Lord, as he travels through time and space in his TARDIS, a sentient machine that looks remarkably like a blue police box.

The TARDIS sits, door ajar with light leaking out, against a midnight-blue sky beneath the halo of the moon. Yes, it really is bigger on the inside. Below, we quote The Doctor, who waxes philosophical about the balance of good and bad in life.

The Doctor Who 50th Anniversary Celebration art print is the same size as a movie one-sheet -- measuring 27" w x 40" h -- and is printed on 100-pound, satin-finish paper.