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Plotted theoretical crater diameter sizes vs. meteorite diameters. Then, they worked backwards and determine the probable size of the 65 mya meteorite, the Barranger meteorite, and a few others by using Google earth to measure crater diameters. For providing some basic information from a meteorite...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
By TED-Ed
Published in 2013
What's six miles wide and can end civilization in an instant? An asteroid -- and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.
Grade Level   6 7 8 9 10 11 12
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3
"Space weather has the potential to wreak havoc on everything from satellite communications to electric power. Sarah Gibson at the National Center for Atmospheric Research is studying the behavior of the sun to help warn against a serious solar storm should it threaten Earth. """"When Nature...
Grade Level   9 10 11 12
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