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A loop in time

February 26, 2009 // Posted in !Share (Tags: , , , , , , , , , ) |  No Comments

time kepts on slippin back to past futures

time keeps on slippin back to past futures....

I love those rare profound moment of new discoveries. I’ve been on an astronomy kick and I happened to share my interest with a co-worker whose become a watershed of information. I first was intrigued by the idea the that everything in the universe is in constant movement, even our sun swaggers about with us in tow. We marveled at the sling shot effect of protective Jupiter and the mysteries of Europa,  its sixth moon. Our latest exchange left me awe struck. My face went blank when I was told light from the stars we see could be from a star that burned out eons ago. We’re use to turning on a light switch and instantly a dark room is lit. When you add some distance, even light appears sluggish. It takes 8 minutes for light photons from our Sun to travel 93 million miles to reach Earth. If the sun were to suddenly disappear, the Earth would be sunless 8 minutes later. One light year is 6 trillion miles, meaning in one year light travels away from its source 6 trillion miles. Add some years to a light year and you get a small glimpse of how gigantic the universe is. There are stars out that that have burned out long before the Earth and their light is still traveling towards us.   Since the universe is continually expanding, light is…eternal.