# Tag Info

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Well, put simply, the Sun will certainly lose at least a fourth of its mass. This is because most of the mass of the Sun is centered in its core. And since a white dwarf is just the remnant core of a star . . . Oh, and before the Sun becomes a white dwarf, it goes through the "red giant" phase, where it grows to about the size of the orbit of mars. All the ...

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Observatories are usually built on mountains where they are cold or not, and they are usually cold because it is higher in elevation for the following reasons: Light from celestial objects are less distorted the higher altitude you are. At higher altitudes the atmosphere is thinner allowing scientists to get more accurate readings while using various ...

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EDIT: It turns out I answered this question earlier (in a slightly different format): Cancelling out earth rotation speed, Altazimuth mount Imagine you are at 35N,106W at 5h local sidereal time. The celestial north pole is at (0,90) in the celestial frame and (0,35) in your frame. The point (5h,0) is (75,0) in the celestial sphere (1h = 15 degrees), and ...

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The Sun's luminosity is stable to 0.1% - it varies slightly in response to, or associated with, levels of solar magnetic activity. This variation would not be perceptible and is completely outweighed by the $\pm 3.4$% variation caused by the non-circular orbit of the Earth (the Sun is closest in January). Obviously, if you live in the northern hemisphere, ...

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At the core of the sun the gravity is so strong that atoms of Hydrogen do not exist, instead we have a mix of protons and electrons initially.What starts the sun shining is the fusion of these protons,in various sequenced patterns. Firstly we have the proton-proton chain, yes, you guessed it, they smash into each other and release energy,and through another ...

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I think it's a fun question, if impossible. The only way to turn Jupiter into a star that's even remotely practical is to add to it's mass. Ignoring brown dwarfs that are very limited in energy output, to get a red dwarf going, you'd need to add at least 75-80 or so Jupiter masses. (a bit more than 24,000 earth masses). You'd want to add a fair ...

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Short answer: The Sun will lose about half of its mass on the way to becoming a white dwarf. Most of this mass loss will occur in the last few million years of its life, during the Asymptotic Giant Branch (AGB) phase. At the same time the orbital radius of the Earth around the Sun will grow by a factor of two (as will the outer planets). Unfortunately for ...

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I don't think this is a bad question, and I think Pela is essentially correct, the effect is very small. Dark energy doesn't expand objects, for example, cause those are bound together, but dark energy should expand space between the sun and the earth though the effect is tiny. If we take this number, 68 KM per second per 1 million light years (link ...

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I welcome further discussion, and evidence supporting, or refuting my answer. If my idea is correct that antimatter is distributed fairly evenly through the voids between galaxies, and that antimatter is the cause of dark energy, then no, dark energy will not move earth out of the way of a sun that is heating up (e.g. it would have no effect, or very little ...

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