Kip Thorne Quotes

Unthinking respect for authority is the greatest enemy of truth,

Everything likes to live where it will age the most slowly, and gravity pulls it there.

An explosion in space makes no sound, as there is no air to transmit the sound waves.

Some segments of this book may be rough going. That's the nature of real science. It requires thought. Sometimes deep thought. But thinking can be rewarding. You can just skip the rough parts, or you can struggle to understand.

Everything is drawn inexorably toward the future.

Kip Thorne says, “By 2020, physicists will understand the laws of quantum gravity, which will be found to be a variant of string theory.

No matter how hard we may try, we can only travel forward. The relativistic laws guarantee it.

Yes, that’s what I meant to say. If this seems a bit circular to you, well, it is, but it has deep meaning.

In 2014, the Earth’s gravity is weakest in southern India (blue spot) and strongest in Iceland and Indonesia (red spots).

Revolutions that upend established scientific truth are exceedingly rare. But when they happen, they can have profound effects on science and technology.

At our meeting, I suggested to Steven and Lynda two guidelines for the science of Interstellar: 1. Nothing in the film will violate firmly established laws of physics, or our firmly established knowledge of the universe. 2. Speculations (often wild) about ill-understood physical laws and the universe will spring from real science, from ideas that at least some “respectable” scientists regard as possible.

But ours is not a dystopia. Life is still tolerable and in some ways pleasant, with little amenities such as baseball continuing. However, we no longer think big. We no longer aspire to great things. We aspire to little more than just keeping life going.

How could human civilization decline so far, yet seem so normal in many respects? And is it scientifically possible that a blight could wipe out all edible

The French translation of ‘a black hole has no hair’ is so obscene that French publishers resisted it vigorously, to no avail.

One of the things that sets Interstellar apart from other sci-fi movies is its lineup of executive producers. There’s Jordan Goldberg (Batman, Inception), Jake Myers (The Revenant), and Thomas Tull (Jurassic World). And then there’s Kip Thorne, emeritus Feynman Professor of Theoretical Physics at the California Institute of Technology in Pasadena. Not many theoretical physicists moonlight as film producers.

We don’t know what triggered the big bang, nor what, if anything, existed before it. But somehow the universe emerged as a vast sea of ultrahot gas, expanding fast in all directions like the fireball ignited by a nuclear bomb blast or by the explosion of a gas pipeline. Except that the big bang was not destructive (so far as we know). Instead, it created everything in our universe, or rather the seeds for everything.

There are other models to explain Cygnus X-1 that do not include a black hole, but they are all rather far-fetched. A black hole seems to be the only really natural explanation of the observations. Despite this, I had a bet with Kip Thorne of the California Institute of Technology that in fact Cygnus X-1 does not contain a black hole! This was a form of insurance policy for me. I have done a lot of work on black holes, and it would all be wasted if it turned out that black holes do not exist. But in that case, I would have the consolation of winning my bet, which would bring me four years of the magazine Private Eye. In fact, although the situation with Cygnus X-1 has not changed much since we made the bet in 1975, there is now so much other observational evidence in favor of black holes that I have conceded the bet. I paid the specified penalty, which was a one-year subscription to Penthouse, to the outrage of Kip’s liberated wife.

As scientists would discover after Einstein’s death, Schwarzschild’s odd theory was right. Stars could collapse and create such a phenomenon, and in fact they often did. In the 1960s, physicists such as Stephen Hawking, Roger Penrose, John Wheeler, Freeman Dyson, and Kip Thorne showed that this was indeed a feature of Einstein’s general theory of relativity, one that was very real. Wheeler dubbed them “black holes,” and they have been a feature of cosmology, as well as Star Trek episodes, ever since.3 Black holes have now been discovered all over the universe, including one at the center of our galaxy that is a few million times more massive than our sun. “Black holes are not rare, and they are not an accidental embellishment of our universe,” says Dyson. “They are the only places in the universe where Einstein’s theory of relativity shows its full power and glory. Here, and nowhere else, space and time lose their individuality and merge together in a sharply curved four-dimensional structure precisely delineated by Einstein’s equations.”4 Einstein

Warping begets warping in a nonlinear, self-bootstrapping manner. This is a fundamental feature of Einstein’s relativistic laws, and so different from everyday experience. It’s somewhat like a hypothetical science-fiction character who goes backward in time and gives birth to herself.

Despite this, I have a bet with Kip Thorne of the California Institute of Technology that in fact Cygnus X-1 does not contain a black hole! This is a form of insurance policy for me. I have done a lot of work on black holes, and it would all be wasted if it turned out that black holes do not exist. But in that case, I would have the consolation of winning my bet, which would bring me four years of the magazine Private Eye. If black holes do exist, Kip will get one year of Penthouse. When we made the bet, in 1975, we were 80 per cent certain that Cygnus was a black hole. By now, I would say that we are about 95 per cent certain, but the bet has yet to be settled.

By laws that we humans are capable of discovering, deciphering, mastering, and using to control our own fate. Even without bulk beings to help us, we humans are capable of dealing with most any catastrophe the universe may throw at us, and even those catastrophes we throw at ourselves—from climate change to biological and nuclear catastrophes.

But doing so, controlling our own fate, requires that a large fraction of us understand and appreciate science: How it operates. What it teaches us about the universe, the Earth, and life. What it can achieve. What its limitations are, due to inadequate knowledge or technology. How those limitations may be overcome. How we transition from speculation to educated guess to truth. How extremely rare are revolutions in which our perceived truth changes, yet how very important. I hope this book contributes to that understanding.

Matthew Choptuik, a postdoctoral student at the University of Texas, carried out a simulation on a supercomputer that he hoped would reveal new, unexpected features of the laws of physics; and he hit the jackpot. What he simulated was the implosion of a gravitational wave.47 When the imploding wave was weak, it imploded and then disbursed. When it was strong, the wave imploded and formed a black hole. When its strength was very precisely “tuned” to an intermediate strength, the wave created a sort of boiling in the shapes of space and time. The boiling produced outgoing gravitational waves with shorter and shorter wavelengths. It also left behind, at the end, an infinitesimally tiny naked singularity (Figure 26.7). Fig. 26.6. Our bet about naked singularities. Fig. 26.7. Left: Matthew Choptuik. Middle: An imploding gravitational wave. Right: The boiling produced by the wave, and the naked singularity at the center of the magnifying glass. Now, such a singularity can never occur in nature. The required tuning is not a natural thing. But an exceedingly advanced civilization could produce such a singularity artificially by precisely tuning a wave’s implosion, and then could try to extract the laws of quantum gravity from the singularity’s behavior.

Radiation from the Big Bang may give us a clue to dark matter and dark energy. First of all, the echo, or afterglow, of the Big Bang is easy to detect. Our satellites have been able to detect this radiation to enormous accuracy. Photographs of this microwave background radiation show that it is remarkably smooth, with tiny ripples appearing on its surface. These ripples, in turn, represent tiny quantum fluctuations that existed at the instant of the Big Bang that were then magnified by the explosion. What is controversial, however, is that there appear to be irregularities, or blotches, in the background radiation that we cannot explain. There is some speculation that these strange blotches are the remnants of collisions with other universes. In particular, the CMB (cosmic microwave background) cold spot is an unusually cool mark on the otherwise uniform background radiation that some physicists have speculated might be the remnants of some type of connection or collision between our universe and a parallel universe at the beginning of time. If these strange markings represent our universe interacting with parallel universes, then the multiverse theory might become more plausible to skeptics. Already, there are plans to put detectors in space that can refine all these calculations, using space-based gravity wave detectors. LISA Back in 1916, Einstein showed that gravity could travel in waves. Like throwing a stone in a pond and witnessing the concentric, expanding rings it creates, Einstein predicted that swells of gravity would travel at the speed of light. Unfortunately, these would be so faint that he did not think we would find them anytime soon. He was right. It took until 2016, one hundred years after his original prediction, before gravity waves were observed. Signals from two black holes that collided in space about a billion years ago were captured by huge detectors. These detectors, built in Louisiana and Washington State, each occupy several square miles of real estate. They resemble a large L, with laser beams traveling down each leg of the L. When the two beams meet at the center, they create an interference pattern that is so sensitive to vibrations that they could detect this collision. For their pioneering work, three physicists, Rainer Weiss, Kip S. Thorne, and Barry C. Barish, won the Nobel Prize in 2017. For even greater sensitivity, there are plans to send gravity wave detectors into outer space. The project, known as the laser interferometry space antenna (LISA), might be able to pick up vibrations from the instant of the Big Bang itself. One version of the LISA consists of three separate satellites in space, each connected to the others by a network of laser beams. The triangle is about a million miles on each side.

Can you identify in your own life speculations that became educated guesses and then truth? Have you ever seen your established truths upended, with a resulting revolution in your life?

Isidore I. Rabi, a close friend and admirer of Oppenheimer, has described this in a much deeper way: “[I]t seems to me that in some respects Oppenheimer was overeducated in those fields which lie outside the scientific tradition, such as his interest in religion, in the Hindu religion in particular, which resulted in a feeling for the mystery of the Universe that surrounded him almost like a fog. He saw physics clearly, looking toward what had already been done, but at the border he tended to feel that there was much more of the mysterious and novel ‘than there actually was. He was insufficiently confident of the power of the intellectual tools he already possessed and did not drive his thought to the very end because he felt instinctively that new ideas and new methods were necessary to go further than he and his students had already gone.

We humans are confined to our brane.

The giant black holes in the cores of galaxies, a million to 20 billion times heavier than the Sun, therefore, cannot have been born in the death of a star. They must have formed in some other way, perhaps by the agglomeration of many smaller black holes; perhaps by the collapse of massive clouds of gas.

The fastest that human spacecraft are likely to achieve in the twenty-first century, I think, is 300 kilometres per second.

The science of Interstellar lies in all four domains: Newtonian, relativistic, quantum, and quantum gravity. Correspondingly, some of the science is known to be true, some is an educated guess, and some is speculation.

There is a maximum spin rate that any black hole can have. If it spins faster than that maximum, its horizon disappears, leaving the singularity inside it wide open for all the universe to see; that is, making it naked—which is probably forbidden by the laws of physics

[B]y reason of its faster and faster infall [the surface of the imploding star] moves away from the [distant] observer more and more rapidly. The light is shifted to the red. It becomes dimmer millisecond by millisecond, and in less than a second is too dark to see . . . [The star,] like the Cheshire cat, fades from view. One leaves behind only its grin, the other, only its gravitational attraction. Gravitational attraction, yes; light, no. No more than light do any particles emerge. Moreover, light and particles incident from outside ... [and] going down the black hole only add to its mass and increase its gravitational attraction.” Black hole was Wheeler’s new name. Within months it was adopted enthusiastically by relativity physicists, astrophysicists, and the general public, in East as well as West—with one exception: In France, where the phrase trou noir (black hole) has obscene connotations, there was resistance for several years.

The first planet that Cooper and his crew visit is Miller’s. The most impressive things about this planet are the extreme slowing of time there, gigantic water waves, and huge tidal gravity. All three are related, and arise from the planet’s closeness to Gargantua.

The environment near Gargantua will become more dangerous for individual life forms, including humans, promoting faster evolution if enough individuals survive.

singularities (places where space and time are infinitely warped)

singularities, he asserted, “are a place in which the fiery marriage of Einstein’s relativistic laws with the quantum laws is consummated.

Matthew Choptuik, a postdoctoral student at the University of Texas, carried out a simulation on a supercomputer that he hoped would reveal new, unexpected features of the laws of physics; and he hit the jackpot. What he simulated was the implosion of a gravitational wave.47 When the imploding wave was weak, it imploded and then disbursed. When it was strong, the wave imploded and formed a black hole. When its strength was very precisely “tuned” to an intermediate strength, the wave created a sort of boiling in the shapes of space and time. The boiling produced outgoing gravitational waves with shorter and shorter wavelengths. It also left behind, at the end, an infinitesimally tiny naked singularity

The detector consists of four huge mirrors (40 kilograms, 34 centimeters in diameter) that hang from overhead supports at the ends of two perpendicular arms. The waves’ tendex lines stretch one arm while squeezing the other, and then squeeze the first while stretching the second, over and over and over again. The oscillating separation between mirrors is monitored with laser beams, by a technique called interferometry. Hence LIGO’s name: Laser Interferometer Gravitational Wave Observatory.

If the imprint is really due to gravitational waves from the big bang, then this is the type of cosmological discovery that comes along perhaps once every fifty years.

I cofounded the LIGO Project in 1983 (together with Rainer Weiss at MIT and Ronald Drever at Caltech). I formulated LIGO’s scientific vision, and I spent two decades working hard to help make it a reality. And LIGO today is nearing maturity, with the first detection of gravitational waves expected in this decade.

Einstein's law of time warps says that Everyting likes to live where it is going to age more slowly, and gravity pulls it there.

If we begin with the ill-understood laws of quantum gravity and then discard the fluctuations, we must obtain Einstein’s well-understood relativistic laws of physics. The fluctuations we discard are, for example, a froth of fluctuating, exquisitely tiny wormholes (“quantum foam” that pervades all of space; Figure 26.3 and Chapter 14).

so matter as we know it gets stretched and squeezed out of existence.

Black holes are made from warped space and warped time. Nothing else—no matter whatsoever.

The nuclear force holds neutrons and protons together more tightly when they form iron nuclei than when they form any other kind of atomic nucleus.

Journey into Gravity and Spacetime (Wheeler, 1990).

En ello residía la belleza de la especulación. Era

Don’t trust everything I say.

La violación es solamente una peculiaridad minúscula en las leyes de la física, una que presumiblemente soportan las leyes con gusto.

tres números, su masa, su momento angular y su carga eléctrica. El

Why are black holes so different from all other objects in the macroscopic Universe? Why are they, and they alone, so elegantly simple? If I knew the answer, it would probably tell me something very deep about the nature of physical laws. But I don’t know.

y hemos contagiado a la comunidad física mundial nuestros niveles matemáticos escandalosamente bajos.

El cálculo, la teoría de variable compleja, la teoría cualitativa de ecuaciones diferenciales, la teoría de grupos y la geometría diferencial estaban cubiertas;

Pronto aprendimos a llevar varios problemas a la vez: un problema difícil que deba ser visitado y revisitado una vez tras otra a lo largo de muchos meses o años antes de que se abra la cáscara, con la esperanza de una gran ganancia; y otros problemas mucho más fáciles, con ganancias más inmediatas.

cuando un cálculo confirma las propias expectativas, uno simplemente se reafirma un poco en su comprensión intuitiva de las leyes de la física. Pero cuando un cálculo contradice las expectativas, uno está en el camino hacia una nueva intuición.

La independencia nutre a la fuerza.

De todas las ideas concebidas por la mente humana, desde los unicornios y las gárgolas a la bomba de hidrógeno, la más fantástica es, quizá, la del agujero negro:

(Caltech is a wonderful place. Named the top university in the world by the Times of London in each of the last three years, it is small enough—just 300 professors, 1000 undergrads, and 1200 graduate students—that I know Caltech experts in all branches of science. It was

quizá incluso tenía miedo— a especular.

Cooper, entering the tesseract, falls down a channel between beams, dazed and confused,

The resulting, stable singularities now carry the name BKL in honor of Belinsky, Khalatnikov, and Lifshitz. A BKL singularity is chaotic. Highly chaotic. And lethal. Highly lethal.

As the Ranger carries Cooper deeper and deeper into the bowels of Gargantua, he continues to see the universe above himself. Chasing the light that brings him that image is an infalling singularity. The singularity is weak at first, but it grows stronger rapidly, as more and more stuff falls into Gargantua and piles up in a thin sheet (Chapter 27). Einstein’s laws dictate this.

Time, he realized, must be warped by the masses of heavy bodies such as the Earth or a black hole, and that warping is responsible for gravity. He embodied this insight in what I like to call “Einstein’s law of time warps,” a precise mathematical formula that I describe qualitatively this way: Everything likes to live where it will age the most slowly, and gravity pulls it there.

First, a weird claim: Black holes are made from warped space and warped time. Nothing else—no matter whatsoever.

If we know the mass of a black hole and how fast it spins, then from Einstein’s relativistic laws we can deduce all the hole’s other properties: its size, the strength of its gravitational pull, how much its event horizon is stretched outward near the equator by centrifugal forces, the details of the gravitational lensing of objects behind it. Everything. This is amazing. So different from everyday experience. It is as though knowing my weight and how fast I can run, you could deduce everything about me: the color of my eyes, the length of my nose, my IQ, . . .