From the Comet impact on Jupiter from some years ago? It seems that there are possible connections of upper atmospheric bacteria being morphed with extra-solarsytem-impact driven lifeforms, such as Bacteria being lifted from Jupiter during the comet impact some years ago. Has anyone condidered this aspect for the appearence of this new virus? I was reading an article about the SARS VIRUS, and it seems quite plausable that new virus/bacteria can be distributed from Planet to Planet by such catostrophic impacts on our Solar neighbours bringing NEW LIFEFORMS to Earth. The upper atmosphere is teeming with bacteria that can be 'living' for eons in the border of our atmosphere and space, I wonder if such a possibility of 'Inter-Solar' Viral Evolution will turn out to be where S.A.R.S originated from? A check of impact from meteorites that have come through our atmosphere, colliding with bacteria that is allready in our Upper Atmosphere, and then raining down on Earth with far reaching consequences. Just a possibility?..or just a good storyline for a standard disaster B-Movie? I think there are grave possibilities for this to have actually happened, the Comet impact on Jupiter a couple of years ago produced a cloud of debris that was ejected into our solar system, it seems likely that there would be particles that reach Earth sometime after impact-time. You heared it here, we may have to look more closely at our Solar System Impacts on other Planets, not just here on Earth.