Thread: Science Science is Cool....
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Old 02-18-2014, 08:58 PM   #1391
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Quote:
Originally Posted by tiptap View Post
Earlier you said that the sun "orbits" the barycenter of the universe. Technically no object has to orbit another. You also can fall into the object or you can escape the orbit as well though not the gravitational force altogether. And since the barycenter of the universe is a mathematical grid/measurement starting point, it is arbitrary to what mass is being included. And can wildly swing as the result. Bary-anything is just an attempt to put a ruler, a grid to deal extend the "algebra" to the situation under investigation.
Yes, you're right. When I said the sun orbited the barrycenter of the universe, I meant that it orbited the barrycenter of just our solar system. I said it right the first few times, but confused "Universe" with "Solar system" in the post with the gifs. I meant the total center of mass of the planets in our solar system. Not the entire universe.

Technically, I also referenced the barrycenter of the Sun-Jupiter as well, which is different than the planet center of mass as it just compared the masses of two bodies.
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