A Quote by 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 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.
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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.
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.
If you want to see a black hole tonight, tonight just look in the direction of Sagittarius, the constellation. That's the center of the Milky Way Galaxy and there's a raging black hole at the very center of that constellation that holds the galaxy together.
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.
One of the big mysteries about the black hole at the center of the galaxy is, 'Why don't we see emission from matter falling onto the black hole, or, rather, the black hole eating up its surroundings?'
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.
An ordinary black hole is thought to be the end state of a really massive star's life.
Calling something exotic emphasizes its distance from the reader. We don't refer to things as exotic if we think of them as ordinary. We call something exotic if it's so different that we see no way to emulate it or understand how it came to be. We call someone exotic if we aren't especially interested in viewing them as people - just as objects representing their culture.
I consider myself the queen of pugs of New York City. I'm really into my dogs. Massive pugs, massive needlepoint, massive color!
I get massive invective, massive abuse, via email, phone messages, and Twitter. From people way, way to the right of center - scary, abusive kind of stuff. Really freaks out my assistant and my wife. Hate-filled.
It's not a matter of how much you know or can define, or how many millions of mantras or thousands of prostrations you have done, or how many months of wangs you've attended. The important thing is whether or not the mind is really changing, whether our negative emotions are really coming under control, whether we are really beginning to understand ourselves, whether our mind is really improving, and whether in our hearts there is genuine love and caring for other people.
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.
The question that I started off with was, I thought, very simple. It was just 'Is there a massive black hole at the center of the Milky Way?' But one of the things I love about science is that you always end up with new questions.
As an astronomer, I get to ignore the details of the things that we dont understand. Theres 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.
Now, our Sun will not collapse to a black hole. It's actually not massive enough.
Fear is just part of our DNA and our make-up. By definition, if we've had to be looked after for two years, it means we can't do it on our own and we need other people. That makes trust enormously important and it makes fear massive. Massive fear and trust issues really just defines us. The partner to belief is truth. If we're being fed lies, that's so powerful. And then, when we realize we're being lied to, it's going to make us really angry.
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