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  1. How is Earth protected from the gamma rays generated by the Sun?

    The Sun is generating energy by nuclear fusion. This nuclear fusion will emit energy in the form of gamma rays. Normally, the earth's ozone layer filters the ultraviolet radiation while the earth's

  2. Why doesn't sun go all the way to the horizon during sunset?

    Apr 14, 2023 · Everytime I see the pics of suset on beaches the sun appear to go all the way down to the surface of the sea (as shown in the picture) but when I see sunset in my region , the sun …

  3. Is the distance between the Sun and the Earth increasing?

    Besides the moon, the sun has a tidal component for the earths oceans, and when that crashes into continents the energy absorbed comes from the potential energy of the sun-earth system. I am not …

  4. astronomy - How big a coincidence is the Sun and Moon having …

    May 3, 2020 · It's consensus that the very similar apparent sizes of the Moon and the Sun as seen from Earth is a coincidence (as already answered in this site). This provides us with almost exact total solar

  5. Why is 1 AU the distance between the Sun and the Earth?

    In the 1800's the AU was connected to: the time average of 1 divided by the Earth-Sun, and that is the reason Gauss's constant occurred (until 2012) in the calculation of the AU.

  6. Moon vs Sun size and distance 400 times - Physics Stack Exchange

    Jan 16, 2017 · The Sun and Moon seem to have the same size because of this amazing coincidence: the moon is 400 times smaller than the Sun and 400 closer than the Sun. Checking 400 from this …

  7. astrophysics - Why wouldn't the part of the Earth facing the Sun a half ...

    Dec 22, 2016 · Over half a year, this nearly 4 minute difference every day adds up to about 12 hours, the time it takes to rotate half way around and face the sun again. 24 hours is the length of the …

  8. Do the planets really orbit the Sun? - Physics Stack Exchange

    Jun 10, 2015 · The sun is 1000 times more massive than Jupiter, so the sun-Jupiter barycenter is about 1/1000th of the way from the sun's center of mass to Jupiter's center of mass.

  9. How much lux does the Sun emit? - Physics Stack Exchange

    I want to know how much lux the sun emits on a bright day - I don't mean when one stares directly at the sun, but rather when one walks casually outside when the sun is shinning brightly. Now the

  10. Where do planets get energy to revolve around sun? [duplicate]

    Closed 11 years ago. We know that every planet in our solar system revolve's around the sun in a particular orbit. But were to they get the energy to revolve around the sun. And why do they not drop …