Quotes About Black holes

We have this interesting problem with black holes. What is a black hole? It is a region of space where you have mass that's confined to zero volume, which means that the density is infinitely large, which means we have no way of describing, really, what a black hole is!

A lot of the things you see in science fiction revolve around black holes because black holes are strong enough to rip the fabric of space and time.

black holes generate an amazing amount of light. The problem is, their gravity is so great, the light can't escape—it just gets pulled in along with everything else.

How many black holes have we been up close and personal with? Kosta countered. All sorts of odd things happen near the event horizon, from huge tidal forces to variations in time. Personally, I'm voting on it having to do with gravity, either a polarization of the fields themselves or else something related to the time differential. I didn't know physics had become a democracy, Hanan murmered.

Fifty-five crystal spheres geared to God's crankshaft is my idea of a satisfying universe. I can't think of anything more trivial than quarks, quasars, big bangs, and black holes.

There are frontiers where we are learning, and our desire for knowledge burns. They are in the most minute reaches of the fabric of space, at the origins of the cosmos, in the nature of time, in the phenomenon of black holes, and in the workings of our own thought processes. Here, on the edge of what we know, in contact with the ocean of the unknown, shines the mystery and the beauty of the world. And it's breathtaking.

The heat of black holes is like the Rosetta stone of physics, written in a combination of three languages- quantum, gravitational, and thermodynamic- still awaiting decipherment in order to reveal the true nature of time.

It is the curious local structure of the present that produces black holes.

The nature of time is perhaps the greatest remaining mystery. Curious threads connect it to those other great open mysteries: the nature of mind, the origin of the universe, the fate of black holes, the very functioning of life on Earth. Something essential continues to draw us back to the nature of time.

There's a lot of cruelty going on all the time, and I'm not just talking about inter-human cruelty. I'm talking about whole species becoming extinct, asteroids hitting planets, black holes gobbling up stars.

The most accessible field in science, from the point of view of language, is astrophysics. What do you call spots on the sun? Sunspots. Regions of space you fall into and you don't come out of? Black holes. Big red stars? Red giants. So I take my fellow scientists to task. He'll use his word, and if I understand it, I'll say, "Oh, does that mean da-da-da-de-da?

For ordinary household gravity, Newton's law works just fine. It got us to the Moon and returned us safely to Earth in 1969. For black holes and the large-scale structure of the universe, we need general relativity.

These waves, predicted by Einstein, are ripples moving at the speed of light across the fabric of space-time, and are generated by severe gravitational disturbances, such as the collision of two black holes.

In recent years, astronomers have discovered that not all stars shine. There are some stars of such tremendous density, instead of radiating outwards they only draw light in. Therefore, they have named these stars, "Black Holes." Fortunately, the universe has enough Black Holes already. If you have light, shine forth.

I would love to be remembered for ridding the world of disease, but my knowledge of science comes from episodes of 'Nova' and shows on the Discovery Channel. I don't think a superficial understanding of shark behavior and black holes can help cure diseases.

frases con fuerza gravitacional, hoyos negros que devoran cuanto se halla a su alrededor.

Frases que nadie cita, pero que todos recuerdan. Frases que parecen escritas sin mayor esfuerzo, pero que pesan, gravitan. Eso mero: frases con fuerza gravitacional, hoyos negros que devoran cuanto se halla a su alrededor.

I once had a friend at Oxford who drifted into the study of Hegel, that famously impenetrable German philosopher, and was never seen again. There are intellectual black holes, vortexes of endless regression, that mortals out to stay clear of.

The loop approach to quantum gravity is now a thriving field of research. Many of the older ideas, such as supergravity and the study of quantum black holes, have been incorporated into it. Connections have been discovered to other approaches to quantum gravity, such as Alain Connes's non-commutative approach to geometry, Roger Penrose's twistor theory and string theory.

But Einstein was not the best mathematician around, and others, undeterred by neither the difficulty of the equations nor the war that was ravaging Europe (this was 1916), were able to find solutions. Some of the most important solutions ever found—those that describe the gravitational fields of stars and black holes—were written down by a German officer named Karl Schwarzchild as he lay dying in a field hospital of a skin disease he had picked up in the trenches.

For simple black holes, which do not rotate and have no electric charge, the values of the temperature and entropy can be expressed very simply. The area of the horizon of a simple black hole is proportional to the square of its mass, in Planck units. The entropy S is proportional to this quantity. In terms of Planck units, we have the simple formula S = .25 A / h G. Where A is the area of the horizon, and G is the gravitational constant.

Every five minutes, a pair of black holes merges somewhere in the universe, pouring gravitational waves out into space.

Black holes, we all know, are these regions where if an object falls in, it can't get out, but the puzzle that many struggled with over the decades is, what happens to the information that an object contains when it falls into a black hole. Is it simply lost?

I originally wanted to be an astronaut when I was a kid. Then I had this huge fear of black holes because my brother learned a bunch of stuff about it, and he's like, 'Oh, yeah, if you go into one you're never coming back.'