Fred , scientist who authored 1957 novel The Black Cloud (5)

(Other definitions for hoyle that I've seen before include "English astrophysicist, who coined the term "big bang", d. 2001" , "English astronomer who rejected the 'Big Bang' theory of the origins of the universe, d. 2001" , "cosmologist" , "Writer on games (according to -)" , "English author, expert on card games, d.1769 - English astrophysicist, d. 2001" .)