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.
FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2013/28jan_2012da/
VIDEO: http://www.youtube.com/watch?v=GwidzVHvbGI
