70s(?) sci-fi story about astronauts using their knowledge of evolution to figure out they're in a space zoo
124486
Short story or book about a space crew on a broken ship who were capturing alien animals for a zoo
144490
'80s sci-fi novel about about an astronaut returning to Earth to find it devoid of human life
87201
Short story or novel from the 1970s or before about two warring alien tribes
76070
Novel about people living in a virtual reality on a spaceship, only discovering this over time
22474
Trying to track down a sci-fi story about Venus
73180
Movie where an astronaut finds a space module by looking his clock
119198
Looking for title of a sci-fi story about a one-way space journey
99907
Looking for a story about a post-apocalyptic earth where an AI learns about humanity
126872
70s YA novel about two boys travelling millions of years into the past, meeting a "cynogasaurus" and rival animal-themed caveman tribes
131908
short story about astronauts/colonists in a hostile planet
37150
Sci-fi novella where colonists begin to de-evolve - Mankind has reached limits of its evolutionary cycle
125849
Short story from 70s with alien parasites that enhance nervous system
58614
Book about space alien cats
90544
Need to identitify a short story about an astronaut stranded alone on a planet that houses a strange museum
98407
Looking for a (short?) story about a cryo ship looking for habitable planets
69427
What 70s (60s?) TV show / TV movie had a generation ship whose inhabitants did not know they were on a spaceship?
18644
Looking for an old-old sci-fi tale about time-traveling