The detection toward the Sun of which of the following proves that nuclear fusion powers the Sun

The detection toward the Sun of which of the following proves that nuclear fusion powers the Sun

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The detection toward the Sun of which of the following proves that nuclear fusion powers the Sun? Neutrinos Why doesn't nuclear fusion occur in your coffee cup? Too little density and temperature For a blackbody, the higher the temperature the brighter and bluer color the object. Process used to measure distance to the nearest stars? Parallax. I shine a continuum of light (a blackbody) through a cooler gas. When I look at the spectrum after it passes through this gas, I notice. The same blackbody with some colors missing or reduced in brightness depending on the composition of the gas. If a star is on the main sequence and has a specific temperature, then it has a well defined luminosity, or absolute brightness. What is the percentage of stars in our Galaxy on the Main Sequence? ~90 % As long as the Sun stays on the main sequence the sun will evolve getting slightly bigger and brighter When the Sun's hydrogen runs out the Sun contracts and burns hydrogen in a shell near the core. Hydrostatic equilibrium keeps the Sun from collapsing. What keeps a white dwarf from collapsing due to gravity? Electron Degeneracy Pressure When the Sun becomes a Red Giant, we are not sure if the Earth will be gobbled by the Sun or not. What will cause the Earth to move outwards? The Sun will lose mass, so the gravity holding the planets is reduced. If humans want to survive the next 5 billion years or so, as the Sun evolves on the Main Sequence, we need to move the Earth outward. How can we accomplish this? Use a large asteroid to exchange orbital energy from Jupiter to the Earth. Which of the following is not a stage of the Sun?
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This note was uploaded on 01/22/2011 for the course ASTR 151 taught by Professor Baer during the Spring '08 term at University of Illinois, Urbana Champaign.

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The detection toward the Sun of which of the following proves that nuclear fusion powers the Sun

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