Polonium, also called Radium F, was the first element discovered by Marie S. Curie. She discovered it in 1898 while investigating radioactivity in pitchblende (uranium oxide). The element is named after Poland, the country of Curie's birth.olonium is a rare, silvery-gray, radioactive low-melting metalloid. Polonium readily reacts with dilute acids, but only slightly with alkalis. All of its isotopes are radioactive. 210 Po emits a blue glow, as the air around it is excited by the decay products.
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Location: Lovund, Nordland, Norway. Meteors become incandescent â or glow â almost as soon as they hit Earthâs atmosphere. Some meteors, such as the Perseids in August, burn up in the atmosphere at about 100 kilometers â or 60 miles â above Earthâs surface. Other meteors, such as the Draconids in October, fall to 70 kilometers â or about 40 miles â before they heat up enough to glow and vaporize. The difference is that the Draconids are much slower meteors than the Perseids. So the height in the atmosphere at which a meteor begins to glow depends on its arrival speed.