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Oct 22, 2013, 7:37 am99 pts
ENNDoes light leave tracks? How is it possible for scientists to observe light that originated billions of years ago? These are questions that intrigue us and we are amazed when scientists figure out a way to observe what to most of us is un-observable. The journey of light from the very early universe to modern…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.









