"Galaxy" is a song by Australian recording artist Jessica Mauboy featuring Stan Walker. It was written by Richard Vission, Ferras Alqaisi, Brett McLaughlin, Dominique Calvillo, Chico Bennett and Brad Ackley. Production for the song was handled by Vission, Bennett, Ackley, Braddon Williams, Anthony Egizii and David Musumeci. "Galaxy" was released digitally on 28 October 2011, as the fifth single from Mauboy's second studio album Get 'Em Girls (2010). It peaked at number 13 on the ARIA Singles Chart and number seven on the ARIA Urban Singles Chart. "Galaxy" also became Mauboy's first charting release in New Zealand, where it reached number 36.

In May 2011, Walker revealed to Herald Sun that he and Mauboy recorded a duet that would be released later in the year. He explained, "It's the first time Australia has had two urban kind of R&B acts doing a duet together ... The song was written for us, but it's definitely our song. It's a beast, that's all I can say". "Galaxy" was written by Richard Vission, Ferras Alqaisi, Brett McLaughlin, Dominique Calvillo, Chico Bennett and Brad Ackley. Production for the song was handled by Vission, Bennett, Ackley, Braddon Williams, Anthony Egizii and David Musumeci. Mauboy posted a video on YouTube of herself discussing the song, saying "It is a very special song. I remember listening to it with Stan and we were just like 'oh my gosh this song is crazy' ... you know talking about [a] galaxy, talking about a relationship that ... theres no way that we can ever part and ... its just that ... one who you love type of song". "Galaxy" was released digitally on 28 October 2011. A digital extended play was released on 9 December 2011, which featured the album version of "Galaxy" and remixes of Mauboy's previous singles "Inescapable", "What Happened to Us" and "Running Back".

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