Short story where an astronaut is sent into space, and then a few years later is found by a significantly more advanced ship, also from Earth
44794
Sublight Starship "passed" by FTL
69401
Short SciFi story where humans join and evolve into a kind of multi-creature
81026
Short Science Fiction story, told in a series of letters
144490
'80s sci-fi novel about about an astronaut returning to Earth to find it devoid of human life
111401
Short sci-fi story about Earth blockaded by other human colonies
19817
Identify a short story about a wall on a planet at the edge of a tiny universe
91065
Short story, space traveller crashes on planet, planet can replicate water, man eventually transforms into alien
92364
Collection of short stories; in one a spy attempts to escape detection on Mars's moon by moving faster than the spaceship can scan
12720
Short Sci-fi story about a sentient planet/creature that exists to seed the universe with life
68150
Looking for a novel with a ship crewed only by children, on a return trip in space to re-populate Earth when they return
28581
Story [novel, novella?] that featured faster-than-light or hyperdrive gained from observing distant drive use, also had a sentient star
119198
Looking for title of a sci-fi story about a one-way space journey
64745
Short story where an alien convinces a human to exchange consciousness with it
146574
Help finding a sci-fi book with a small space ship
121599
Short story about a gigantic space monster that is big enough to cover half of the Earth
34920
Looking for a story about a giant lost ecological ship, and the quirky guy who became its captain
45148
Short story about survivors on Earth after the atmosphere has frozen