A Quote by Andrea M. Ghez
Proof of the black hole is a tremendous amount of mass inside a very small volume. There's 4 million times the mass of our sun within a region that's comparable to the size of our solar system.
Quote Topics
Quote Author
Related Quotes
The key to proving that there's a black hole is showing that there's a tremendous amount of mass in a very small volume. And you can do that with the motions of stars.
The key to proving that there's a black hole is showing that there's a tremendous amount of mass in a very small volume. And you can do that with the motions of stars. The way the star moves around the center of the galaxy is very much like the way the planets orbit the sun.
Black holes are very exotic objects. Technically, a black hole puts a huge amount of mass inside of zero volume. So our understanding of the center of black holes doesn't make sense, which is a big clue to physicists that we don't have our physics quite right.
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!
No matter how you measure it, whether you measure the amount of mass or you measure the number of bodies, most of our solar system exists out beyond the orbits of the asteroids. So we could not have claimed to know our own solar system until Voyager had toured the giant planets.
Scientists have discovered a black hole that is 12 billion times the size of our sun. It's full of Hillary Clinton emails.
As you know, this little grain of sand has mass. A very small mass, but mass nonetheless." And because this grain of sand has mass, it therefore exerts gravity. Again, too small to feel, but there." Now," Katherine said, "if we take trilions of these sand grains and let them attract one another to form... say, the moon, then their combined gravtiy is enough to move entire ocreans and drag the tides back and forth across our planet.
The Second Wave Society is industrial and based on mass production, mass distribution, mass consumption, mass education, mass media, mass recreation, mass entertainment, and weapons of mass destruction. You combine those things with standardization, centralization, concentration, and synchronization, and you wind up with a style of organization we call bureaucracy.
It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing - a somewhat unfamiliar conception for the average mind. Furthermore, the equation E = mc², in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy and vice versa.
North Jersey residents rely on mass transit to get to work and our entire region is interconnected by our transit system.
But there's always a Mass. It's not a formal Mass at all. We're sitting around her dining room table with wine and Eucharist and holding hands. It's very informal and small, but to me that's a wonderful way to have Mass.
All the atoms of our bodies will be blown into space in the disintegration of the solar system, to live on forever as mass or energy. That's what we should be teaching our children, not fairy tales about angels and seeing grandma in Heaven.
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.
The majority of South Africans, black and white, recognize that apartheid has no future. It has to be ended by our own decisive mass action in order to build peace and security. The mass campaign of defiance and other actions of our organization and people can only culminate in the establishment of democracy.
You know, Russia today is, what, 200 million people? In land mass, it's probably 50 times the size [of Japan], in natural resources a hundred times the size! Russia's not doing all that badly. The public there - not everybody - but they have things that the West offered, [that] were only available in the West a long time ago.
Modern science says: 'The sun is the past, the earth is the present, the moon is the future.' From an incandescent mass we have originated, and into a frozen mass we shall turn. Merciless is the law of nature, and rapidly and irresistibly we are drawn to our doom.
Related Authors
Austin O'Malley Quotes
American
Scientist
Carl Sagan Quotes
American
Scientist
Charles Darwin Quotes
English
Scientist
E. O. Wilson Quotes
American
Scientist
Georg C. Lichtenberg Quotes
German
Scientist
Isaac Asimov Quotes
American
Scientist
Jane Goodall Quotes
English
Scientist
Margaret Mead Quotes
American
Scientist
Nassim Nicholas Taleb Quotes
Lebanese
Scientist
Neil deGrasse Tyson Quotes
American
Scientist
Richard Dawkins Quotes
English
Scientist
Stephen Jay Gould Quotes
American
Scientist
Steven Pinker Quotes
Canadian
Scientist
Sylvia Earle Quotes
American
Scientist
Thomas Huxley Quotes
English
Scientist
W. Edwards Deming Quotes
American
Scientist