Thanks to advances in observation technology, more and more black holes are being discovered in space. How dangerous are these objects for planet Earth, asks naturalist and author Christian Mähr.
Black holes were already known 200 years ago – on paper. In 1783, the English physicist John Michell postulated ‘dark stars’ whose gravity should be so great that their light cannot ‘ascend’ from them. It is based on the idea at the time that light consisted of a kind of ‘light atoms’, i.e. small particles, which no longer reach the escape speed of a ‘dark star’.
Actual conditions differ greatly from this simple model. But it’s amazing how well it describes what you see, or more accurately, what you don’t see in a black hole. That is why Michell’s representation can still be found in popular explanations of black holes today. What is it really like?
Source: Krone
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