Now the sun isn't spherical, and it is rotating, but it isn't very aspherical and it isn't rotating very fast so to a good approximation our equation (1) will describe the spacetime curvature around it. This question is inspired by a similar one asked on quora. My 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.
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Let's say a wizard magicked jupiter into the sun, with or without high velocity. The sun will last, at its current brightness for 9 billion more years. How would you prove to them that earth orbits the sun?
Assume you're talking to someone ignorant of the basic facts of astronomy.
If 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… does that mean when we see for example. How long until the sun gets burned down to the point where it cannot sustain life on earth anymore? Those are completely different things. As i asked before, separate threads, please.
Similarly, how would you prove to them that the moon. There are many images and. The quora question has two. 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).
The question is a bit unrealistic with its circumstances but lets assume there is a bucket of ice cooled down to about absolute zero and is about 1000 km away (all around the sun) from sun.
This provides us with almost exact total solar
