May 3, 2020it'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). Feb 15, 2017if this is the case, then when we read things like what time sun sets and rises on websites, books, calendars, other official times, et al. How would you prove to them that earth orbits the sun?
Similarly, how would you prove to them that the moon. Feb 15, 2011do you want to know both how the earth-sun distance is measured and how the speed of light is measured? 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.
The sun will last, at its current brightness for 9 billion more years. How long until the sun gets burned down to the point where it cannot sustain life on earth anymore? 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.
Mar 15, 2019my understanding is that the sun is basically a sphere of hydrogen with a helium core, and that the hydrogen is undergoing nuclear fusion to produce helium. There are many images and. The sun is generating energy by nuclear fusion.
Let's say a wizard magicked jupiter into the sun, with or without high velocity.
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