[3][4] Astronauts is the solo debut feature of Santi Amodeo, who had previously co-helmed The Pilgrim Factor in tandem with Alberto Rodríguez.

[6] A Tesela PC and La Zanfoña production, it had the collaboration of Canal Sur and Canal+.

[7] In addition to Seville, shooting locations also included Los Alcornocales and the port of San Fernando.

[9] Casimiro Torreiro of El País deemed Astronauts to be "a film to be loved", "a rara avis of those that, with its flaws and imperfections, we wish we could watch more often".

[3] Jonathan Holland of Variety deemed the film to be an "unpolished gem whose freshness and originality far outweigh its occasional indulgences".