Recent content by Prof. Hawking

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    Analyzing Bill Nye's Quote on Evolution and Education: Insights from Undeniable

    I'm sorry for posting this here as it is only partially science related but I tried yahoo answers already and received no help due to the science related material in it. I have an assignment is for both biology and english this year (my school like to make commbination assignments for whatever...
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    Why is black hole photon sphere outside the event horizon?

    Thank you Steve I realize now that I had the formulas backwards so now this makes perfect sense, also thanks for the more applicable formula for stable orbit, where did you find this formula as I didn't come across it in any of my googling, is there a reliable online source where I could...
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    Why is black hole photon sphere outside the event horizon?

    What I don't understand is why that minimum orbital distance is farther away than the minimum escapable distance. It seems like the photon sphere would be inside the event horizon because you don't need to be as far away where the gravity is weaker because it takes less energy to orbit Also to...
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    Why is black hole photon sphere outside the event horizon?

    Homework Statement I am preparing a report on black holes and I recently learned about a phenomenon I was previously unaware of: the photon sphere of a black hole. While reading an article on said occurrence (I have now confirmed this on multiple sources) the photon sphere which is the minimum...
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