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Andrea M. Ghez Quotes


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Quotes by Andrea M. Ghez

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I'm interested in finding whether or not there is a really massive, what we like to call 'super massive' black hole at the center of our galaxy. And the reason this is interesting is that it gives us an opportunity to prove whether or not these exotic objects really exist.

~Andrea M. Ghez

Topics: Black Black Hole Call Center Exist Exotic Finding Galaxy Gives Hole Interested Interesting Like Massive Objects Opportunity Our Prove Really Reason Super Us Whether

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An ordinary black hole is thought to be the end state of a really massive star's life.

~Andrea M. Ghez

Topics: Black Black Hole End Hole Life Massive Ordinary Really Star State Thought

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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.

~Andrea M. Ghez

Topics: Amount Big Black Black Hole Black Holes Center Clue Exotic Hole Holes Huge Huge Amount Inside Make Mass Objects Our Physicists Physics Puts Quite Right Sense Technically Understanding Very Volume Which Zero

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As an astronomer, I get to ignore the details of the things that we don't understand. There's a lot of work that we can do on scales that we do understand, and there is actually a finite size that I can associate with a super massive black hole.

~Andrea M. Ghez

Topics: Actually Associate Astronomer Black Black Hole Details Finite Get Hole Ignore Lot Massive Scales Size Super Things Understand Work I Can

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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.

~Andrea M. Ghez

Topics: Believe Black Black Hole Centers Galaxies Galaxy Hole Host Massive Most Ordinary Our Pretty Super Tells Us

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There's a large cluster of stars that are orbiting the center of our galaxy. And by measuring the motion of stars, and in particular, their orbits, we can figure out whether or not there's a central black hole.

~Andrea M. Ghez

Topics: Black Black Hole Center Central Cluster Figure Galaxy Hole Large Measuring Motion Our Out Particular Stars Whether

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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.

~Andrea M. Ghez

Topics: Amount Black Black Hole Comparable Hole Inside Mass Million Million Times Our Proof Region Size Small Solar Solar System Sun System Times Tremendous Tremendous Amount Very Volume Within

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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.

~Andrea M. Ghez

Topics: Approach Around Closest Einstein Every General Go Measurements Opportunity Orbit Period Precise Relativity Short Short Period Star Test Theory Through Very Will Years

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Astronomers are obsessed with building larger and larger telescopes. There are two promises that we make with bigger telescopes: that they can see fainter things and that they see more detail. But it's been really hard to follow through on that second promise because of atmospheric distortion.

~Andrea M. Ghez

Topics: Because Been Bigger Building Detail Distortion Follow Follow Through Hard Larger Make More Obsessed Promise Promises Really Second See Things Through Two

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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!

~Andrea M. Ghez

Topics: Black Black Hole Black Holes Confined Density Describing Hole Holes Infinitely Interesting Large Mass Means Problem Really Region Space Volume Way Where Which You Zero

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Biography

Nationality: American

Type: Scientist

Born: June 16th, 1965

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