Podcast: Black Hole Surfaces, Magnetic Field Strengths, and the Speed of Gravitons

Article written: 18 Sep , 2008
Updated: 24 Dec , 2015
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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 twice the number of Astronomy Cast episodes. So if you’ve got a question on a topic we cover in a recent show, or you just have a general astronomy question, send it in to [email protected] Either by email, or record your question and email in the audio file.

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Black Hole Surfaces, Magnetic Field Strengths, and the Speed of Gravitons show notes.


2 Responses

  1. Vic Haynes says

    Hi,
    Sorry to have to correct the prof but magnetism is a bipolar field and its strength rolls off as the cube of the distance not the square. Hope I am correct.
    Vic Haynes.

  2. CraigC says

    What if we had a way of attainng part of the speed of light, and then partially attracted the light to us magnetically, or with gases, somehow, or a type of gravity. Doesn’t gravity of a celestial body depend upon the chemical make-up of the celestial body, and how is that in congruence with mass, change gravity.
    Light cannot escape a black hole, but gases can. Maybe on the flip side of some of these black holes, the gases that escape it, converge, and start a new nebulae.

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