[kjam22]

There are a lot of things about this stuff that I don't understand. Like ... why hasn't the earth's orbit of the sun decayed after all of these years. The earth would go in a straight line if the sun's gravity suddenly ceased... so that means the sun's gravity is working against the natural tendency of the earth's movement. How has the earth maintained this momentum all of these billions of years against a constant force pulling it a different direction? Has the orbit decayed?

[PatrickHenry]

Late ping for a good thread.

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