Hal Clement

Mission of Gravity is a science fiction novel by Hal Clement. The novel was serialized in Astounding Science Fiction magazine in April–July 1953. Its first hardcover book publication was in 1954, and it was first published as a paperback book in 1958. Along with the novel itself, many editions of the book also include …

Needle is a 1950 novel written by Hal Clement, originally published the previous year in Astounding Science Fiction magazine. The book was notable in that it broke new ground in the science fiction field by postulating an alien lifeform, not hostile, which could live within the human body. Also published as From Outer …