HA! You beat me to it!
Rido58-- I read Lucifer's Hammer when it came out back in the '70's. I JUST finished re-reading it last week and it's still very good by today's standards. It wasn't even a "genre" back then. Be aware it's in the 70's so it's dated, but you might get a kick out of the old views and lifestyle. And the people back then had no preparation because TEOTWAWKI wasn't even part of pop culture.
Be aware, it kinda drags a bit in the beginning, while you're learning who's who, but once the comet hits (spoiler alert) it's a page-turner. I don't know why it hasn't been made into a movie. It would have been prohibitively expensive before CGI, etc., but I bet someone's working on a script somewhere.
If you have a Kindle I could send it to you....
