Andrea M. Ghez

The key to proving that there's a black hole is showing that there's a tremendous amount of mass in a very small…

— Andrea M. Ghez

We have this interesting problem with black holes. What is a black hole? It is a region of space where you have…

— Andrea M. Ghez

The key to proving that there's a black hole is showing that there's a tremendous amount of mass in a very small…

— Andrea M. Ghez

Astronomers are obsessed with building larger and larger telescopes. There are two promises that we make with bigger telescopes: that they can…

— Andrea M. Ghez

Fortunately, most things around the supermassive black hole are just going to go around it. They're going to orbit it. They don't…

— Andrea M. Ghez

The Keck telescope, which is the largest in the world, had opened just before I began my faculty position at UCLA.

— Andrea M. Ghez

As an astronomer, I get to ignore the details of the things that we dont understand. Theres a lot of work that…

— Andrea M. Ghez

One of the key differences between galaxies with super massive black holes is whether or not the black holes are lit up,…

— Andrea M. Ghez

Gravity wins over all other known forces.

— Andrea M. Ghez

Black holes are very exotic objects. Technically, a black hole puts a huge amount of mass inside of zero volume. So our…

— Andrea M. Ghez

Any time things go to infinity in physics, we know we haven't gotten it right.

— Andrea M. Ghez

The star S0-2 orbits around Sgr A* every 16 years and will go through its closest approach in 2018. That's an opportunity…

— Andrea M. Ghez

One of the big mysteries about the black hole at the center of the galaxy is, 'Why don't we see emission from…

— Andrea M. Ghez

I'm interested in finding whether or not there is a really massive, what we like to call 'super massive' black hole at…

— Andrea M. Ghez

Our galaxy's pretty ordinary, garden-variety. So if we believe our galaxy has a super massive black hole, that tells us that most,…

— 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…

— Andrea M. Ghez

The atmosphere is great for people - it allows us to survive - but it's a real headache for astronomers.

— Andrea M. Ghez

The question that I started off with was, I thought, very simple. It was just 'Is there a massive black hole at…

— Andrea M. Ghez

There's a large cluster of stars that are orbiting the center of our galaxy. And by measuring the motion of stars, and…

— Andrea M. Ghez

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

— Andrea M. Ghez

How do you observe something you can't see? This is the basic question of somebody who's interested in finding and studying black…

— Andrea M. Ghez