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NASA Exoplanets on Twitter: "The ingredients that form planets and people were forged in stars. How that material was distributed throughout the universe is a key question that might be answered in
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Cassiopea A from al Sufi manuscript Suleymanie Library, Istanbul, Ayasofya 2595, Kitāb suwar al-kawākib al-ṯābita, 1249-50AD
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