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Originally posted by Hijinx
reply to post by 0mage
ERrrrrrrrrrrrrrr. I dunno, it's very possible that the 100year old pulse of light we discovered this planet with, would most definitely mean the planet is not in the same location. However, for it to be closer, it would also be easier to discover. There seems to be a whole heck of a lot of info scientists can discern from a simple reflection. For instance if they no the source of the light, they can calculate the distance, as well as size, even density and composition in some cases.
I Like to think, if in the 100 years it took that light to get to us, if the planet were closer, we would see the movement of the planet, in an almost fast forward type motion. As the planet gets closer, it takes less time for the light to arrive to us. So if the planet was moving fast enough for it to say arrive at the cockbull 2012 end date, it would appear to be hurtling towards us at an amazing speed. Likely so quick you could not get an image of the object. Assuming it was traveling close to the speed of light of course. Otherwise, I don't see it getting here unnoticed.