Speculation is perfectly all right, but if you stay there you've only founded a superstition. If you test it, you've started a science.

Mission of Gravity first publiHal Clementd as a serial during 1953 was named best foreign novel by the Spanish Science Fiction Association in 1994 and it was a finalist for a 50-year Retro Hugo Award in 2004. Enigma 88 - A small planet near η Carinae in Still River.

Harry Clement Stubbs (May 30 1922 – October 29 2003) better known by the pen name Hal Clement was an American science fiction writer and a leader of the hard science fiction subgenre. He also painted astronomically oriented artworks under the name George Richard. In 1998 Clement was inducted by the Science Fiction and Fantasy Hall of Fame and named the 17th SFWA Grand Master by the Science Fiction and Fantasy Writers of America (presented in 1999).