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Much closer than stars are the distant lamps (polychromatic or monochromatic), say 2 to 3km away, also twinkle. this cannot be related to change of index of refraction due to temperature's variations , since the frequency of this twinkling does not vary strongly with air turbulence. the accepted explanation for this is: light is formed of photons (light ...

0

Various "black holes"[1] are simply solutions to the Einstein Field Equations, and, if the EFE are an accurate picture of reality, then "bent time" (nontrivial spacetime curvature tensor) is exactly what the Einstein Field Equations tell us. In particular, the EFE predict a situation where, if there is enough energy in a region of space, then the geometry of ...

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Your thinking about general relativity. Gravity actually changes time and the reason why we know this (other than our equations that tell us it is so) is because we have measured it. Time flows slower on earth than on our satellites. People who design satellites need to change their clocks so that they match up with earth. Even spending your life on a plane ...

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As you are talking about a "Star map" and "current visible positions", I'll assume you are talking about a star map of the ${\sim} 5000$ stars visible to the naked eye. Most of those stars are within 1000 light years of he Earth. They have typical velocity dispersions with respect to the Earth of ${\sim} 10$ km/s, with the occasional rare star with a ...

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