Noun
hard science (countable and uncountable, plural hard sciences)
(informal) Any of the natural and physical sciences that use the scientific method and experiments to test theories. Examples include mathematics, biology, physics, chemistry and geology.
We need to get environmentalism out of the sphere of religion. We need to stop the mythic fantasies, and we need to stop the doomsday predictions. We need to start doing hard science instead. Michael Crichton
Doctor Who has never pretended to be hard science fiction ... At best Doctor Who is a fairytale, with fairytale logic about this wonderful man in this big blue box who at the beginning of every story lands somewhere where there is a problem. Neil Gaiman
When I began in 1960, individuality wasn't an accepted thing to look for; it was about species-specific behaviour. But animal behaviour is not hard science. There's room for intuition. Jane Goodall
Hard science gives sensational results with a horribly boring process; philosophy gives boring results with a sensational process; literature gives sensational results with a sensational process; and economics gives boring results with a boring process. Nassim Nicholas Taleb
If you don't care about science enough to be interested in it on its own, you shouldn't try to write hard science fiction. You can write like Ray Bradbury and Harlan Ellison as much as you want. Frederik Pohl
'Farscape' is not what you call hard science fiction. Ben Browder