８３ Exit to the another universe：Wormhole 【Black Hole】Dialogue with the Universe
８３－１ Black hole 
・Black hole is a "hole" opened in space-time.
・In the case of a charged or rotating black hole, it is possible to avoid the singularity.
・Extending these solutions as far as possible reveals the hypothetical possibility of exiting the black hole into a different spacetime with the black hole acting as a wormhole.
・The possibility of traveling to another universe is, however, only theoretical since any perturbation would destroy this possibility.
８３－２ How to make wormhole 
・Rotate the white dwarfs in the form of a ring, creating a vortex (wormhole) in space.
・Injecting a negative energy in the vortex to stabilize the wormhole.
※To create a wormhole diameter 1 m, it is necessary to convert the same mass of Jupiter to negative energy. 
☆First of all, we need to find a white dwarf that rotates in a ring shape.
※Conceptual diagram of a wormhole 
８３－３ How to find the wormhole 
・When it comes to wormhole hunting, said Nagoya University astrophysicist Fumio Abe, looking for the distant signatures of smaller gravitational lenses, called microlenses, is the way to go
・Unfortunately, these impromptu wormholes would be super small, appearing at the Planck scale. That’s about 10-33 centimeters long. In other words, the wormhole would be so small that it'd be almost impossible to detect. 
1. Wikipedia：Black hole
2. Morgan Freeman “Through The Wormhole s04e03 Can We Survive the Death of the Sun”36:35/1:04:14
3. Dave Mosher”TWINKLING STARS MAY REVEAL HUMAN-SIZE WORMHOLES”at WIRED 20120210
5. Loren Grush”WILL WORMHOLE TRAVEL EVER BE POSSIBLE?”at POPULAR SCIENCE 20141026