posted on Mar, 16 2010 @ 06:44 AM
Originally posted by Byrd
Originally posted by sleeper
It gets ejected similar to a solar flare which can be shot out millions of miles into space in an instant.
Just FYI, the only reason that solar flares get shot so far out is because they don't have much mass.
You're half correct. The reason solar flares get ejected out so far is due to a force that causes this ejection and because of its low mass this
force doesn't need to be that great (F=ma).
To escape the sun's gravity, a planet would have to be going much faster than the escape velocity of the sun
No, it would need to have an escape velocity or a force equivalent for an escape velocity. That is what the term means.
Once it got going at that speed [escape velocity], there's nothing to actually stop it at the orbit of Mercury.
How about gravity? Once an object reaches escape velocity, it is in orbit and in this case it means it will orbit the Sun. The distance it orbits the
Sun is determined by the amount of force that is applied to accelerate this object against the Sun's gravitational acceleration (or negative
All bodies of mass act like sails on ships and the sun with its solar winds push on that mass. Because of the magnetic shields around many planets the
solar wind blows mostly around them, nevertheless, planets are ever so slowly nudge further away from the sun by this force---only my .02
There's not enough mass in the solar wind to nudge a planet. You don't get knocked down by the brownian motion of still air (which is about the
same kind of impact on you as solar wind has on planets.)
Sleepers statement is correct, the solar wind does accelerate mass similar to the wind on a sail. The question is how much force is there from the
Sun's solar wind on the Earth and other planets? Brownian motion and solar wind are two very different observed phenomena and is a very poor example
on your part. Of coarse the Earth isn't being knocked down by the solar wind any more then we are by random fluctuations from minute particles.
Planets move away from their suns because of angular momentum.
Here's a thought, where do you suppose the angular momentum comes from that cause these planets to move away from their stars?
[edit on 3/16/2010 by Devino]