Mall-Size Comet Heads Toward Sun

Here's a Thanksgiving surprise: a comet the size of a shopping mall is hurdling toward the sun is expected to skim one million miles from the surface on Thursday. If the clump of dust and ice remains intact before dawn it may be visible from Earth as an arc across the sky. "It could very well turn out to be really awesome," says astronomer Yan Fernandez of the University of Central Florida. The comet was discovered in 2012 and has confused astronomers by seeming near death and then reviving multiple times.