Plant versus sun?

We are told that our sun is 4.5 billion years old, the earth 4.2 billion years old. We have evidence that at some time in their lives the earth and the inner planets were subjected to a massive bombardment of extra-terristrial bodies. Do we know if this happened to the outer planets and if so did the sun recieve the same treatment

Plant versus sun?
Yes.





Crators on the moons of Juipter and Saturn prove that the bombardment continues even today - recall the impact of Shoemaker/Levy 9 into Jupiter some years ago.





Comets regularly impact the sun or are destroyed by them - there are some spectacular pics from the Sun observing cameras in space.





Gravitational attraction guarantees that the chunks left over from the formation of the planets in the disk that was the solar system just after stellar ignition were swept up into the planets as they formed.
Reply:Galactic cannibalism refers to the process by which a large galaxy, through tidal gravitational interactions with a companion, merges with that companion, resulting in a larger, often irregular galaxy.





MERGING IS THE MOST VIOLENT of all galaxy interactions.... Collisions are less violent than mergers in that both galaxies remain separate after the collisions. If one of the colliding galaxies is much larger than the other, it will remain largely intact after the merger; that is, the larger galaxy will look much the same while the smaller galaxy will be stripped apart and become part of the larger galaxy.





It has been suggested that galactic cannibalism is currently occurring between the Milky Way and the Large and Small Magellanic Clouds. Streams of gravitationally-attracted hydrogen arcing from these dwarf galaxies to the Milky Way is taken as evidence for this theory.
Reply:Well, the formation of the solar system was a long process.


A massive disk of material was rotating about the center, which eventually became the Sun.





When the sun first 'switched on', it began blowing all the lighter materials in the disk to the outer solar system, where it collected to form the gas giants, while the heavier, rocky material wasn't affected by the wind as much, and it collected to form the rocky inner planets.





The material of this formation orbited with the planets (and still does), every now %26amp; then pelting them with a big rock. As time goes on, there are fewer rocks available, as they've been pulled in by one planet or another.





Probably the cores of all the gas giants are rocky; it's probably how their mass began to collect; so while they're major make-up is gases - hydrogen, helium, methane, etc - their cores are probably dense with rocky/metallic material, and the few rock that still are around that get near enough might be pulled in.





We saw this with Jupiter, when it got hit with a comet in 1994.





The Sun may not have received a *lot* of bombardment, as the orbiting debris was, in fact in orbit around the sun .
Reply:We don't have enough evidence to tell if the outer planets were bombarded like Earth but it is pretty probable because if many extra terrestrial bodies hit the inner planets, some are bound to hit the outer ones. About the sun, it wouldn't matter because the heat would destroy planets and fuse with the sun. There is too much light coming from the sun to properly analyze it's crevices regardless.
Reply:yes, it happened to the outer planets


(evidence on the moons)





no evidence, but gravitationally, it MUST have happened to the sun!





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(above)


The Sun? crevices? are you serious?
Reply:Maybe, and Maybe, but the Sun and outer planets being gaseous have no scars to show for their experience of it.





The moons of the outer planets do have scars however, and it seems that the bombardment was going on out there also.





Check here for details:


http://en.wikipedia.org/wiki/Late_heavy_...
Reply:yes of course, just look at the darkside of the moon

skates