Phrase by 'Andrea M. Ghez'
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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.
Author: Andrea M. Ghez - American ScientistBlack , Inside , Understanding , Physics
The star S0-2 orbits around Sgr A* every 16 years and will go through its closest approach in 2018. That's an opportunity to test Einstein's General Relativity theory through very precise measurements of this star's short period orbit.
Author: Andrea M. Ghez - American ScientistShort , Will , Go , Opportunity
Gravity wins over all other known forces.
Author: Andrea M. Ghez - American ScientistOver , Other , Wins , Gravity , Known
One of the key differences between galaxies with super massive black holes is whether or not the black holes are lit up, because they are basically bingeing on a lot of material in its surroundings.
Author: Andrea M. Ghez - American ScientistBlack , Differences , Key , Surroundings
Our galaxy's pretty ordinary, garden-variety. So if we believe our galaxy has a super massive black hole, that tells us that most, if not all, galaxies host such a black hole at their centers.
Author: Andrea M. Ghez - American ScientistBlack , Pretty , Believe , Galaxy
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.
Author: Andrea M. Ghez - American ScientistBlack , Inside , Small , Sun
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.
Author: Andrea M. Ghez - American ScientistYou , Black , Stars , Small
The Keck telescope, which is the largest in the world, had opened just before I began my faculty position at UCLA.
Author: Andrea M. Ghez - American ScientistWorld , Just , Position , Telescope
Fortunately, most things around the supermassive black hole are just going to go around it. They're going to orbit it. They don't actually get sucked in.
Author: Andrea M. Ghez - American ScientistBlack , Just , Go , Things
How do you observe something you can't see? This is the basic question of somebody who's interested in finding and studying black holes. Because black holes are objects whose pull of gravity is so intense that nothing can escape it, not even light, so you can't see it directly.
Author: Andrea M. Ghez - American ScientistYou , Black , Nothing , Light
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