PDA

View Full Version : Like two trains passing in the night… a year apart



TomTerrific
October 14th, 2012, 03:23 PM
http://farm8.staticflickr.com/7122/8074654233_61ee5c05de_z.jpg


http://blogs.discovermagazine.com/badastronomy/2012/10/13/like-two-trains-passing-in-the-night-a-year-apart/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+BadAstronomyBlog+%28Bad+Astro nomy%29