The Jet Propulsion Laboratory’s Near Earth Object (NEO) Program catalogs asteroids and comets that come within 1.3 astronomical units (the average distance between the Earth and sun). Close approaches of NEOs happen every day. Just this week, 18 asteroids and comets on that list passed within 1.3 AU, the closest coming within 586,000 miles. Asteroid 2014 RC will pass by Earth early Sunday afternoon. The asteroid was discovered Aug. 31 by Catalina Sky Survey telescopes near Tucson, Arizona and estimated to be about 60 feet wide and traveling at about 25,000 miles per hour. Read more at http://www.wral.com/asteroid-to-pass-by-earth-sunday-afternoon/13957314/#m86OjIGRD6mSTvDD.99