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Black Holes in Central Park

Pale Blue Pod

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How Do We Study Black Holes Without Taking a Picture?

There is a section that there is like one sentence that should have been formatted as if it was a title. But it's formatted like paragraph text. So now it just looks like the book is wrong. I get it. Um, this is one of the issues of writing books about astronomy and actively evolving science. Like sometimes you write something and then science happens and then what you write is wrong, but it's too late to take it back. That's how it goes. so it goes. And we've only done this twice. We did it with a Sagittarius A star and we did it with the black hole at the center of M87, another galaxy. There are like

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