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The Big Dipper has a New Star!
There is a new star in the sky – and it’s located in the Big Dipper! The new star is a white dwarf star that was discovered at the McDonald Observatory at the University of Texas in Austin."May 2, 2008...Polonium-210 one of world's rarest elements
"LONDON, England (AP) -- Polonium-210 -- the radioactive substance used to poison a former Russian spy in London -- is one of the world's rarest elements, first discovered in the 19th century by scientists Marie and Pierre Curie. It is highly lethal when ingested, and...
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