Like the other cosmic impact novels of the late 1970's, most notably Lucifer's Hammer and Shiva Descending, The Hermes Fall tends to get lost in its characters. Still, for those who can find it, it is a rather intriguing read. What sets The Hermes Fall apart from other cosmic disasters is that it focuses on a known asteroid. A five-mile-wide behemoth, Hermes passed within half a million miles of the Earth in 1937. Although much better than Lucifer's Hammer as far as complexity of story, it isn't as good as Shiva Descending or Thunder Strike, by Michael McCollum, because it lacks the emotional elements.
Used availability for John Baxter's The Hermes Fall
April 1978 : USA Hardback
May 1979 : USA Mass Market Paperback
August 1978 : UK Paperback