The EP was released on 14 October 2019 by independent record label Dirty Hit, and was supported by the singles "She Plays Bass" and "I Wish I Was Stephen Malkmus".

[4] On the concept of the record, Erica Russel of Teen Vogue wrote, "aptly-titled Space Cadet finds the artist leaning heavily into the frustration of being misunderstood and the awkward uncertainty of inching closer towards adulthood.

[6][7][8][9] Erica Russel of Teen Vogue also wrote that the record features "an emotive soundbed of fuzzy indie-rock, melancholic grunge, and breezy pop-rock".

Thomas Smith of NME wrote noted that Space Cadet "builds on Bea’s astute songwriting and is a bold revolution for another bright young artist showing off Gen Z’s attitude to take something tried-and-tested and give it a new lease of life."

noted that her ability to "spin emotional stakes out of such basic subject matter as her bass-playing bestie and love for '90s alt-rock" as well as "the sheer speed of her progression as a songwriter, suggest big things to come.