The Alchemist is tbe correct answer and Karljant sussed out the clues.
Clue 1: I think “The Alchemist” is the only Maiden song that mentions a comet in its lyrics. Luboš Kohoutek was an astromomer best known for the comet named after him.
Clue 2: The Maiden song is directly about the alchemist John Dee, who was an advisor to Queen Elizabeth I and who’s credited with coining the phrase “British Empire.” Later in his life, Dee fell out of royal favor when James I ascended to the throne. He also became increasingly frustrated with science and turned more to mysticism for answers. As a result he was duped by a charlatan named Edward Kelley who, among other things, convinced Dee to let him sleep with Dee’s wife.