polaris93 Feb 17, 2014 12:22
asteroid detection, mass extinctions, comets, asteroids, space, impacts, space program, asteroid deflection
polaris93 Oct 30, 2010 00:37
government, asteroid detection, danger, science, asteroids, threats, impacts, universe today, nasa, asteroid deflection
polaris93 Oct 16, 2010 01:18
impacts, universe today, technology, danger, asteroid deflection, threats, space
polaris93 Oct 14, 2010 23:29
impacts, universe today, astronauts, science, asteroid deflection, space
polaris93 Jan 22, 2010 22:48
photons, paint, asteroid detection, universe today, money, asteroid deflection, earth