Hard Science Fiction/ Space Opera about vast wormhole like structure
94948
Book about time portals inside an asteroid in Earth orbit
42481
Desperately searching for sci-fi book with Cube on cover; characters killed off until one couple remains
123838
Book about a planet covered in very, very long necked aliens
60870
SciFi novel about scientists discovering "alternatives" to electromagnetism
100510
Novel where a group of scientists in a spaceship encounter various aliens
110527
Sci-Fi novel that involves mind backups and (small) group minds
75047
Scifi novel where humans defeat an ancient AI enemy by firing a wave of "slowness", preventing hyperdive space travel
61205
SciFi from an Alien's perspective
92271
70s/80s Sci-Fi book with teleport gates on sub-light spacecraft and an army space suit
35707
SF novel about one-way scientific expedition to inhabited planet, where telepathic aliens "talk" sort of ++like this++ and ~*~this~*~
104183
Short story with space microbes latching onto electromagnetic fields
17094
Identity novel, short story or book series... slower than light space battles, time dilation and boardings, several planets
154388
Sci-Fi book with 4 prison planets
142054
Seeking title / author of a story about alien first contact with Earth
18991
Book about attack by aliens that decimate entire human fleet and take a single prisoner
47861
A sci-fi book or TV show about a tribesman discovering he or she actually lives in a huge spaceship
76070
Novel about people living in a virtual reality on a spaceship, only discovering this over time