Tech - Physics

There is a hypothesis known as the "Weak Cosmic Censorship Hypothesis" that protects observers who remain outside the black hole from the consequences of the breakdown of predictability that occurs at the singularity, but it does nothing at all for the poor unfortunate astronaut who falls into the hole.
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Themovement of the earth in its orbit round the sun produces gravitationalwaves. The effect of the energy loss will be to change the orbit of theearth so that gradually it gets nearer and nearer to the sun, eventuallycollides with it, and settles down to a stationary state.The rate of energyloss in the case of the earth and the sun is very low—about enough to run a small electric heater. This means it will take about a thousandmillion million million million years for the earth to run into the sun, sothere’s no immediate cause for worry!
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