Asteroid 2012 DA14 will pass closest on February 15, 2013. As the image above shows, it will pass much closer than the orbit of the moon – closer even that orbiting geosynchronous satellites (22,000 miles).
Comet Lovejoy was a sight to behold from Earth's Southern Hemisphere in late 2011. Here the comet is reflected in the water of Mandurah Esturary near Perth on December 21, 2011. Image Credit: Colin Legg.