Kip Thorne — American Physicist born on June 01, 1940,

Kip Stephen Thorne, is an American theoretical physicist, known for his contributions in gravitational physics and astrophysics. A longtime friend and colleague of Stephen Hawking and Carl Sagan, he was the Feynman Professor of Theoretical Physics at the California Institute of Technology until 2009 and is one of the world's leading experts on the astrophysical implications of Einstein's general theory of relativity. He continues to do scientific research and acted as a scientific consultant in the science fiction film Interstellar... (wikipedia)

A black hole really is an object with very rich structure, just like Earth has a rich structure of mountains, valleys, oceans, and so forth. Its warped space whirls around the central singularity like air in a tornado.
Each black hole spins on its axis like the Earth spins. That spin creates two vortexes of twisting space, somewhat like vortexes in a bathtub or a whirlpool.
'Closed timelike curve' is the jargon for time travel. It means you go out, come back and meet yourself in the past.
Whether you can go back in time is held in the grip of the law of quantum gravity.
If you have somebody who's brilliant and highly creative with a different point of view than you have, and a very different intellectual background, great things can happen.