the orbits of Pluto and Mercury are very eccentric compared to their planetary colleagues, which means they have managed to keep their individual orbital speeds constant over time the sun is the central body of the solar system, and it's also right at the center of most planets' orbits Mars travels at a much faster orbital speed around the sun than does earth none of the planets in our solar system has a constant orbital speed, and none has the exactly same speed as any other planet the force that keeps the planets in their orbits was known by Copernicus and Kepler to be Gravity, even before Newton realized it RETURN TO HOME PAGE RETURN TO TOP OF THIS PAGE SKIP TO Version 1-
(it; 's also; right at the center of most planets' orbits) Context(it 's also,List([233, 242))):(Mars; travels; around the sun) (the force; keeps; the planets; in their orbits) (their planetary colleagues; means; they have managed to keep their individual orbital speeds constant over time) Context(their planetary colleagues means,List([63, 102))):(they; have managed; to keep their individual orbital speeds constant over time) Context(their planetary colleagues means they have managed,List([63, 120))):(they; have managed to keep; their individual orbital speeds; T:over time) Context(their planetary colleagues means,List([63, 102))):(the sun; is; the central body of the solar system) (none; has; the exactly same speed)
it 's also,List([233, 242)) their planetary colleagues means,List([63, 102)) their planetary colleagues means they have managed,List([63, 120)) their planetary colleagues means,List([63, 102))
it Mars the force their planetary colleagues they they the sun none
's also travels keeps means have managed have managed to keep is has
right at the center of most planets' orbits
around the sun
the planets in their orbits
they have managed to keep their individual orbital speeds constant over time
to keep their individual orbital speeds constant over time
their individual orbital speeds T:over time
the central body of the solar system
the exactly same speed