If you have perturbations in the orbit of planets like Uranus for example, That led to the discovery of Neptune. Due to gravitational pull that caused these perturbations.
That is true. However, the perturbations were not things that would be noticed by a figurative viewer on the planet in question. Instead they were things like the planet being a few arcseconds ahead or behind its theoretical unperturbed orbit.
Why can’t accumulation of planets in our solar system like Jupiter 318 times larger then Earth, Saturn 95 times. Uranus 64 times, affect us?.
They do affect us, but only a tiny amount. The mechanism you are talking about here is called the tide. The thing about tidal forces is that because it is a gravitational interaction between two bodies, and not a form of electromagnetic radiation, the force exerted drops off in the inverse cube of the distance (as opposed to the inverse square law). So, it is both the mass of the object and its distance which determines the tidal force exerted on us, and the other planets are very, very far away.
If we were to align all of the planets at their closest distance to earth, the total combined tidal force would be about 2% of the tidal force that is exerted by the moon. In fact, because the moon orbits the earth in an ellipse, the tidal force changes from low to high over a 14 day period, and then back to low again 14 days later. The total combined tidal force exerted by all of the planets together is only about 10% of this change.
If you have all these planets in a vertical or horizontal position with there gravitational pull being amplified In a certain direction, why not.
It may seem that way, but when you do the math you will find that the forces are very, very tiny… certainly not enough to cause earthquakes (although that is a persistent myth).
If space has no gravity
That is correct. Gravity is a property of mass.
… and a object is pushed it can travel forever until it hits something.
Yes, but not necessarily in a straight line. Gravity from a nearby star would tend to curve the path of an object traveling by that star. Exactly how much depends on the masses of the two objects and the distance between them.
… are you trying to tell me that these planets Are too far and it don’t affect us.
Again, they have a calculated effect on us, but the effect is minuscule.
Gravitational pull travels through space just like light does,
Actually it doesn't. Gravitational pull is actually a curvature of space-time. It doesn't travel through space like light, it is part of space.
… there’s no stopping it.
That is true, even more than for light.
That’s why the sun keeps us in rotation, each planet affects the other and this has been proven I under stand mass is a big contributor.
The gravity of the planets have long-term effects on the other planets. For example, Pluto is in a resonant orbit with Neptune, and Mercury's rotation is dictated by a resonance with its orbital period. This does not mean that planetary alignments can exert enough force on the earth to cause earthquakes.
But Like I stated above with the discovery of Neptune there could be something behind it,
There are actually a lot of things out beyond Neptune. Just not any big ones (that we know of). It would not be a huge surprise to find something substantial out there, and such an object is predicted by some theories. However, it appears unlikely at this point, unless it is very faint, and very distant.
… we should keep our minds open and by the way, I like the way most of you tried belittling me. .
I hope my questions & comments get good answers and not smart remarks.
I hope that you can read the responses with the open minded attitude you request of us.
Laura (guest) 25 Jul 2010 16:49
