In keeping with my tradition of making up my mind about things, and then waffling later, I thought I would spend some time thinking about exploding comets and Jupiter.

Why would it be the case that when an exploding comet fragment hits Jupiter, such a small fragment goes off like an atomic bomb, leaving a scar the size of the Earth. This would suggest a massive release of energy. Do comet fragments gain energy from Jupiter's gravitational field as they fall, such the incresing velocity is real and not just apparent? If this is not the case then what would explain such a titanic explosion. Why would some falling comet hit the earth and leave a cater about 500 meters in size, and then hit Jupiter and leave a crater the size of some small planet?

Is such a phenomenon best explained as being a product of space and time?

Why is it that when you release a 'lighter than air' balloon it has this almost instantaneous velocity? Why do things that fall up start out fast and then gradually slow down, the reverse of what happens to things that fall down. It would seem to me that the best explanation for this phenomenon is conserved momentum. The rising balloon did not need momentum because it had more than enough already, as you can tell by that instantaneous appearing burst of speed. Did the rising balloon require acceleration by the gravitational field, and a good dose of energy to fuel that acceleration. It sure doesn't look like it.

When a balloon slows down and stops does it 'lose momentum'. The density of energy state has decreased, and its velocity decreases. No exchange of energy is required to achieve a decrease in density.

Therefore it would seem that when a comet hits Jupiter, its energetic density has increased greatly, resulting in a greater explosion. This would be understood then as a relativistic increase in the energy level of that comet fragment caused by the contraction of space.

Let's assume that temperature is relative. The temperature of an object could be quite high in one space and quite low in another space. Therefore in one space the exact same object could start a fire while in another space the exact same object could cause freezing. Would it be possible then for a comet fragment to cause a 500 meter crater on Earth and and an Earth sized crater on Jupiter? Is everything here relative or does an exchange of energy take place?

Or to rephrase the question, why should there be any difference in the direction in which some body falls as far as energy transfer is concerned. Could it be that the moon is not accelerating, so it falls in circles without any energy transfer taking place, because its velocity is constant. On the other hand would it not be true that the velocity of the moon is constant because it is falling in circles, and thus the shape of space and the dilation of time are constant and unchanging.

If it is true that no exchange of energy is taking place when objects fall, in any direction, then I feel that I have a pretty much complete theory of gravitation, however if energy transfer is required then it obviously needs more work.