Mercury nets spacecraft companion - USA Today http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNF02mcuSpHqlH5i3AoTwqUGhmK54g&url=http://www.usatoday.com/tech/science/columnist/vergano/2011-03-18-Mercury-MESSENGER-gravity_N.htm

Mercury nets spacecraft companion - USA Today http://ping.fm/5zGRp