SOLVED. Science Fiction, Clones, Alien Invasion, Comet or Meteor. [s]

[Jeff]

I read a book in the 90's, early 00's. It was about a comet or metor that kills all lifeon earth. The sole survivors were 6-8 scientists in a lab on the moon. Every few centuries the computer clonea them and sends their copies to earth to investigate the planet.

[Angela]

Terraforming Earth by Jack Williamson?

[Jeff]

Amazing! Thank you sooo much! That was driving me batty!