APRIL 20: Boston Marathon Live on CBSBoston.com, WBZ-TV and WBZ NewsRadio 1030 | Coverage Details
Live Blog | Mile By Mile Guide | Road Closures | Best Spectator Spots | Forecast | All Marathon Coverage

Asteroid 2005 YU55

This radar image of asteroid 2005 YU55 was obtained on Nov. 7, 2011, at 11:45 a.m. PST, when the space rock was about 860,000 miles from Earth.  (Image credit: NASA/JPL-Caltech)

Large Asteroid To Pass Close To Earth Tonight

This is one of those stories that grabs everyone’s attention – an asteroid the size of an aircraft carrier is headed toward the Earth.