Black holes
Images of supermassive black holes harvard photo
Time, Time Travel & Traversable Wormholes and other time travel related
Time Travel Portal :: View topic - Time, Time Travel & Traversable Wormholes
Schwarzschild wormhole animation casa
Instability of the Schwarzschild Wormhole (Movie)
cornell.edu - Ask an astronomer: "What is a white hole?" curious question
Curious About Astronomy: What is a white hole?
White holes and Wormholes provides a very good description of Schwarzschild wormholes with graphics and animations, by Andrew J. S. Hamilton.
White Holes and Wormholes
Wormholes in General Relativity by Soshichi Uchii.
Wormholes in General Relativity
Why wormholes? by Matt Visser.
Matt Visser: General Interest Articles
The Ultimate http://www.froola.com Machine. Black_holes
What exactly is a 'wormhole'? answered by Richard F. Holman, William A. Hiscock and Matt Visser.
Science & Technology at Scientific American.com: Ask the Experts: Physics: FOLLOW-UP: What exactly is a 'wormhole'? Have wormholes been proven to exist or are they still theoretical?
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