Photo Details

Photo detail

November 5, 2011

This image made from radar data taken in April 2010 by the Arecibo Radar Telescope in Puerto Rico and provided by NASA/Cornell/Arecibo shows asteroid 2005 YU55. The asteroid, bigger than an aircraft carrier, will dart between the Earth and moon Tuesday — the closest encounter by such a huge rock in 35 years. But scientists say not to worry. It won't hit