— …described by Ian MacDonald as: ‘a cosmic keynote resounding through space’. Page 169-170, MacDonald, Ian, ‘Revolution in the Head: The Beatles Records and the 60s’ (Random House, 1994)

—David Bowie watched… apparently stoned out of his mind. Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)

—According to Tony Visconti, Bowie… Isaac Asimov with him. Buckley, David, ‘Strange Fascination: David Bowie: The Definitive Story’, (Virgin Books 2015)

—Visconti, who refused to produce… publicity stunt. Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)

—The song’s principal science-fiction sound…a bottleneck slide. Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)

— Gus Dudgeon’s colour-coded diagram of the arrangement…Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)

— …and produce what he called an ‘antidote to space fever’… ‘and my Major Tom is nothing if not a human being.’ Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)

— In 2004 [Camilla Paglia suggested… hopelessness about political reform (“Planet Earth is blue/And there’s nothing I can do”).’ Location 1153 (Kindle edition), Buckley, David, ‘Strange Fascination: David Bowie: The Definitive Story’, (Virgin Books 2015)

—Chris O’Leary has suggested…. she knows’. Page 143-155, O’Leary, Chris, ‘Rebel Rebel: The Songs of David Bowie: 1963 - 1976’ (Repeater Books, 2025)