Earth: asteroid flyby

ScienceCast has some great short videos, educational and fun for kids!<div><br /><div>http://www.youtube.com/watch?v=GwidzVHvbGI</div><div><br /></div><div>On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.</div></div>