Watching asteroids (Introduction)

by David Turell , Friday, June 22, 2012, 20:27 (4325 days ago)

This was a tiny one, but we don't want to be dinosaurs, so we must map the biggies:-
http://www.scientificamerican.com/article.cfm?id=astronomers-catch-video-of-near-miss-asteroid&WT.mc_id=SA_DD_20120622