curie received the nobel prize in physics in 1903, along with her husband and henri becquerel, for their work on radioactivity.
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the chemical composition of earth is quite a bit different from that of the universe. the most abundant element in the earth's crust is oxygen, making up 46.6% of earth's mass. silicon is the second most abundant element (27.7%), followed by aluminum (8.1%), iron (5.0%), calcium (3.6%), sodium (2.8%), potassium (2.6%)
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