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.
'Closed timelike curve' is the jargon for time travel. It means you go out, come back and meet yourself in the past.
A big misconception is that a black hole is made of matter that has just been compacted to a very small size. That's not true. A black hole is made from warped space and time.
If you go down through the horizon of a black hole, at the center you don't find a tunnel that leads you to some other place in the universe.
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.
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.
If you have a wormhole, then you can turn them into time machines for going backward in time.
We see no objects in our universe that could become wormholes as they age.
As early as I can remember, I wanted to be a snowplow driver. When you grow up in the Rocky Mountains, like I did, you see the snow drifts piled up six feet high, and you're two feet, so it's impressive.
Gravitational waves will bring us exquisitely accurate maps of black holes - maps of their space-time. Those maps will make it crystal clear whether or not what we're dealing with are black holes as described by general relativity.
I do hope that 'Interstellar' and this kind of science in film will catch the public fancy and help to reignite an interest in science - and a respect for the power of science in dealing with the problems that society has to deal with.
When gravitational waves reach the earth, the waves stretch and squeeze space. This is a tiny stretch and squeeze. Far too small to detect with ordinary human senses.
Our universe - it's three-dimensional, but we can pretend it's two-dimensional so it's like this sheet of paper - and we live in Pasadena over here and London is over there, and it's thousands of miles from Pasadena to London.
I have used movies to go to sleep at night. You flip from channel to channel to channel and see just enough to make your brain mushy and go to sleep.
The human race has a yearning to explore. That's part of our biological and psychological makeup.
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