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18 September 2008
Podcast: Black Hole Surfaces, Magnetic Field Strengths, and the Speed of Gravitons
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As you know, we wanted to answer listener questions regularly, but we found it was taking away from the regular weekly episodes of Astronomy Cast. So we've decided to just split it up and run the question shows separately from the regular Astronomy Cast episodes. If this works out, you might be able to enjoy [...]
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02 November 2007
Podcasts: Rising Winds from Supermassive Black Holes
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Astronomers now believe there's a supermassive black hole lurking at the heart of every galaxy. When these monsters are actively feeding, an accretion disk of material builds up around them, like swirling water waiting to go down the drain. For the first time, astronomers have detected winds rising up from this disk of doomed material. [...]