Two Comets to make record close-approach during March 2016 Click-on image to enlarge | Credit: Nemesis Maturity 2016 Two Comets Headed for close approaches to Earth Record-Breaking Comet Flyby March 2016 March turns out to be the month of great celestial events in 2016. On March 21 the comet 252P/LINEAR 12 will make its closest approach yet, passing just 3.1 million miles (5.3 million