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Astronomy Cast

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Apr 15, 2019

526: Event Horizon Telescope and the Black Hole at M87

Astronomy Cast 526: Event Horizon Telescope and the Black Hole at M87

by Fraser Cain & Dr. Pamela Gay

Today, of course, we're going to talk about the announcement from the Event Horizon Telescope and the first photograph of a black hole's event horizon.


Apr 8, 2019

525: 100 Years of the International Astronomical Union

Astronomy Cast 525: 100 Years of the International Astronomical Union

by Fraser Cain & Dr. Pamela Gay

Even though they might be scattered around our planet, astronomers have way to come together to work out issues that face their entire field of study. It's called...


Apr 1, 2019

524: Judging Age & Origins, part 3 - Beyond Our System

Astronomy Cast 524: Judging Age & Origins, part 3 - Beyond Our System

by Fraser Cain & Dr. Pamela Gay

We learned how to figure out the ages of objects in the Solar System, now we push out into the deeper Universe. What about stars, galaxies, and even the Universe...


Mar 25, 2019

523: Judging Age & Origins, Pt. 2 Across the Solar System

Astronomy Cast 523: Judging Age & Origins, Pt. 2 Across the Solar System

by Fraser Cain & Dr. Pamela Gay

Today we push our aging curiosity out into the Solar System to ask that simple question: how old is it and how do we know? What techniques do astronomers use...


Mar 18, 2019

522: Judging Age & Origins, part 1 - Earth Rocks

Astronomy Cast 522: Judging Age & Origins, part 1 - Earth Rocks

by Fraser Cain & Dr. Pamela Gay

People always want to know how old everything is. And more specifically, they want to know how we know how old everything is. Well, here at Astronomy Cast, it's our job to tell...