In some sense, gravity does not exist; what moves the planets and the stars is the distortion of space and time.
Interpretation
Gravity is not a force but a result of the curvature of space and time.
In this quote, Michio Kaku presents a modern scientific perspective, suggesting that gravity is not simply a force acting at a distance, but rather a phenomenon arising from the curvature of spacetime caused by mass. This understanding aligns with Einstein's theory of general relativity, where massive objects distort the fabric of the universe, leading to the movement of celestial bodies.
In practice
During a lecture on astrophysics, I quoted Kaku to explain the complex relationship between gravity and spacetime.
The Europeans and the Americans are not throwing $10 billion down this gigantic tube for nothing. We're exploring the very forefront of physics and cosmology with the Large Hadron Collider because we want to have a window on creation, we want to recreate a tiny piece of Genesis to unlock some of the greatest secrets of the universe.
Cancer is like the common cold; there are so many different types. In the future we'll still have cancer, but we'll detect it very, very early, so that it won't kill anybody. We'll zap it at the molecular level decades before it grows into a tumor.
When you look at the calculation, it's amazing that every time you try to prove or disprove time travel, you've pushed Einstein's theory to the very limits where quantum effects must dominate. That's telling us that you really need a theory of everything to resolve this question. And the only candidate is string theory.
Consciousness-one level is understanding where we are in space. Consciousness two is where we understand our position in society: who's top dog, who's underdog and who's in the middle. And type-three consciousness is simulating the future. And type-three consciousness, only humans have this ability to see far into the future.
Some advice: keep the flame of curiosity and wonderment alive, even when studying for boring exams. That is the well from which we scientists draw our nourishment and energy. And also, learn the math. Math is the language of nature, so we have to learn this language.
After that cancellation [of the Superconducting Super Collider in Texas, after $2 billion had been spent on it], we physicists learned that we have to sing for our supper. ... The Cold War is over. You can't simply say "Russia!" to Congress, and they whip out their checkbook and say, "How much?" We have to tell the people why this atom-smasher is going to benefit their lives.
I take no pleasure in the fact that the scientific predictions Iβve relayed to popular audiences turn out to be true.
Not to leave planet Earth would be like castaways on a desert island not trying to escape...Sending humans to other planets ... will shape the future of the human race in ways we don't yet understand, and may determine whether we have any future at all.
The ideal scientist thinks like a poet and works like a bookkeeper
Science cuts two ways, of course; its products can be used for both good and evil. But there's no turning back from science. The early warnings about technological dangers also come from science.
Perhaps arising from a fascination with animals, biology seemed the most interesting of sciences to me as a child.
I don't expect that the million will ever be won, simply because there is no confirming evidence for any paranormal claims to date.
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