Everything has a birthday. It鈥檚 the same day, about 13.77 billion years ago. Scientists claim that they are 99% certain that this is the age of our entire universe. But how could they possibly know...
I was fascinated by yesterdays announcement that "old light"鈥� revealed trace evidence in the background radiation of the earliest鈥� 聽trillionth of a trillionth (and then some) of a second of the ...
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