Ultra/ultimate humans, ancient structures on an alien planet, pig-people
75789
Planet where giant manned machines travel in convoy across surface, tracking some astronomical phenomenon
147218
Human visits aliens with advanced hearing and culture with heavy emphasis on music
125074
Earth as Water World, invasion at climax, fought off
142162
Alien surface transport that walks, not rolls
29101
McCarthyism, Martian Colonists, Water Powered Ships, and Mining Asteroids Near Saturn
104818
What's the relationship between the Monster's planet and Earth?
45680
A science fiction story about a headdress that allows one human to control and experience another human's body
75348
Interstellar Zoo story
110501
Anime style cartoon - 4 characters on a planet with giant oval floating robots looking for them - 1989 or before
117021
Is there a human home planet?
51413
Protagonist becomes the avatar of an alien deity and has to cope with adversary god
113245
Humans orbiting exoplanet establish telepathic control of massive six-legged feline creature that has IR-sense plates instead of eyes
143007
Book with travellers, alien artefacts and age reversal
119018
Space war, humans recreated, grown from plants with an alien female supervisor
111401
Short sci-fi story about Earth blockaded by other human colonies
139418
Looking for a short story about an insect-like alien captured by humans on its own planet
101007
Short story from many years ago: the ancient, brilliant, cruel race was Earthlings