Marie Jeanne Welsch dreamed of being an astronaut, but she knew she would never realize that goal, because, as she writes, "I didn t have the vision or the grades."
White holes are the opposite of black holes in almost every way. General relativity predicts their existence, but why haven’t astronomers found any yet?
For decades, the concept of faster-than-light travel has fueled the imaginations of science fiction enthusiasts, with Star Trek's warp drive standing as a prominent example.
"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." -Groucho Marx
"While no one has proved that wormholes exist, that does not for a moment keep the more adventurous of thinkers from trying to figure how they might behave."
-Michael Lemonick, Time magazine