Novel about using small wormholes to view the past
20264
SciFi book where scientists learn to peek through time (possibly controlled miniature wormhole?). Computer screens were carried like a handkerchief
84362
A Brief History of Time book in Harry Potter and the Prisoner of Azkban
16900
A short story about finding an inhabitable planet and meeting aliens
157284
How do wormholes work?
112532
Short story about a hole to another universe that pulls in metal
106210
Help Identifying an Alternative History Novel
87095
Sci-fi novel involving living forever through teleporter copies
125571
Practical time travel: time dilation above the event horizon
62193
Trying to find a book about rediscovered space travel after interstellar war isolates planets
862
Book ID: Astronauts and Lab Students can create portals through space
52172
Short story involving time travel through a train station
140661
novel with psi slavery
17094
Identity novel, short story or book series... slower than light space battles, time dilation and boardings, several planets
19817
Identify a short story about a wall on a planet at the edge of a tiny universe
80328
YA novel - kid finds some kind of time traveling creature
92004
Looking for old book, SF, artificial world, different zones for different species that visitors "inhabit"
148140
A book with a telepathic woman awakened after a few hundred years