Excerpts from this story referencing Earth

"… ut dangerous extraterrestrial threat: asteroids on a collision course with Earth. After Edward Teller, father of the American hydrogen bomb, urged others …"

"… dioactive debris from such a nuclear explosion could itself wreak havoc on Earth. Outside the world of weaponeers, the idea can evoke humor, as exemplifie …"

"… Armageddon,” which shows a team of deep-sea oil drillers landing on an Earth-bound asteroid to implant a nuclear warhead that, at the last moment, sepa …"