Calculate the deflection of light caused by the gravity of a star of mass 8M sun and radius 4Rsun.
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- The general theory of relativity suggests that the spacetime around a large gravitational source will be curved. Thus a photon passing by the source will appear to be traveling in a curved path.
- The amount of selection caused will be given by,
Here G is the universal gravitational constant, M is the mass of the source, R is its radius, and c is the speed of light.
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- using the parallax method (p = 0.77) and the standard candle method (apparent magnitude = 11.13; absolute magnitude = 15.60) to compute the distance to Proxima Centuari, both produce a result of about 4 light years. From a scientific and an inductive reasoning point of view why is getting about the same answer viewed as extremely significant from the standpoints of inductive reasoning and probable truth What is the concept of making inductive arguments stronger that applies? Answer here. What do these methods tell us about the size of the universe we live in compared to the universe Tycho and the people of his time thought they lived in?One of our closest stars is our Sun, duh. If the distance from Earth to our Sun is 1.56e-05 light-years, how quickly is that star travelling away from us? [Note that Hubble's Constant is roughly 70 km/s/Mpc and 1 light-year is roughly 3.07E-7 Mpc.] m/sI understand that to an outside observer, the light from a star that is collapsing into a black hole will become more and more red-shifted as the surface of the star appears to approach the black hole event horizon. The outside observer will never actually see the surface of the star cross the black hole event horizon. This applies to all outside observers: at infinity, in orbit around the star/black hole or those using a rocket to hover above the black hole. Conversely, I know that for someone on the surface of the star that is collapsing to form a black hole it will appear quite different. The observer on the surface will not see anything unusual happen as they cross the event horizon and in a finite time they will reach the singularity at the center of the black hole where we do not know what will happen since general relativity breaks down in a singularity. So, now consider an observer that starts at a great distance from the star who is continually falling directly into the star…
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