If there was dust cloud around solar system, and we could
not see the stars, how would we explain planetary motion?
The planets would have mystical certrifugal forces acting
on them, which have no source.
2007-05-30 06:19:38 · 2 answers · asked by Alexander 6 in Science & Mathematics ➔ Physics
There's no such thing as centrifugal force. Gravity between planets and stars is a centripetal force. There is no force pushing us away from the sun.
Even if we couldn't figure out our position in orbit relative to static stars, we'd still notice we were getting closer to and further away from the sun periodically, and it wouldn't take a huge genius to figure out we were orbiting it from there, especially given the motion of the other planets relative to us.
2007-05-30 07:07:09 · answer #1 · answered by Anonymous · 0⤊ 1⤋
More likely than not, the universe has angular momentum. To think it's really zero would assume an infinitely perfect balance of all momenta.
2007-05-30 13:53:58 · answer #2 · answered by Gene 7 · 0⤊ 0⤋