How Do You Detect a Black Hole? LIGO and the Measurement of Gravitational Waves

Black holes may hold the key to understanding the most fundamental truths of the universe, but how do you see something that’s, well, black? Astronomers think they have the answer. Thanks to a global array of radio telescopes that turn the Earth into a giant receiver, we may soon have the first picture of the event horizon of Sagittarius A*, the black hole at the center of the Milky Way galaxy. And, with the power of math, scientists are going even further, using equations to “look” inside black holes, peering at the central singularity where general relativity and quantum mechanics collide. Brian Greene moderated a program of leading physicists and astronomers, including Vicky Kalogera, on a journey to make darkness visible.

Find out more about the program and the participants:…


Credit: World Science Festival