Dimitri sings "I Lost My Heart to a Starship Trooper" on the ISS. (COMIC: The Hyperion Empire)
According to John Hart, "I Lost My Heart to a Starship Trooper" was his and Jack Harkness' song. Jack denied this. (TV: Exit Wounds)
Astronaut Dimitri Yemtov sang the song on the International Space Station in 2015. Its lyrics included "I lost my heart to a starship trooper / flashing thighs in hyper-space." (COMIC: The Hyperion Empire)