 Date: 2014-09-17 15:31:50Impact event Meteorite 4 Vesta Asteroid Asteroids Asteroid-impact avoidance Traces of Catastrophe Astronomy Planetary science Space | |  Lesson Title: Energy Transformations: Extra-Terrestrial Impacts on Earth NSF GK-12 Fellow: Mari Elise Ewing (Boulder, CO) Grade Level: Middle School Type of Lesson: Physical Science Objective: Students will learn about e
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