Stars are thought to form within enormous filaments of molecular gas. Regions where one or more of these filaments meet, known as hubs, are where massive stars form. These massive stars, located ...
Walk your neighborhood to make your own scale model of the Solar System, then draw how comets crash down to Earth. Disciplinary Core Ideas: 1-ESS1-1, 1-ESS1-2, 5-ESS1-1, and 5-ESS1-2. Science & ...
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