"Astronomy Domine" is a song by the British rock band Pink Floyd, featured on their debut album, The Piper at the Gates of Dawn, released in 1967. The track is known for its psychedelic sound and space-themed lyrics, reflecting the band's early exploration of experimental music and themes related to the cosmos. The song was primarily written by Syd Barrett, the band's original frontman, and showcases the use of innovative guitar effects and atmospheric soundscapes. It has become a significant piece in the psychedelic rock genre, influencing many artists and contributing to the band's legacy in music history.