Chasing Wormholes: The Hunt for Tunnels in Space-Time

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I find this one of the most fascinating reads I’ve had today. Especially this:

Based on certain wormhole theories, he compared peering through a wormhole to Alice’s glimpse through the looking glass, in Lewis Carroll’s novel of the same name. The region of space at the far end of the tunnel should stand out from the area around the entrance thanks to distortions that would be similar to the reflection in curved mirrors. Another indication may be the way light is concentrated as it moves through the wormhole tunnel, much as the wind blows through a physical tunnel.

Davis refers to what is seen at the near end of a wormhole as a “rainbow caustic effect.” Such effects could be seen from a distance.

“Astronomers were planning to use telescopes to hunt for these rainbow caustics as a sign of a naturally occurring, or even an alien-made, traversable wormhole,” Davis said. “I never heard if that project got off the ground.”

via Chasing Wormholes: The Hunt for Tunnels in Space-Time.