Spending more money on asteroid and meteor detection techniques won't necessarily make the planet safer, according to a planetary scientist. Alexander Deutsch, a professor of planetology at the University of Münster in Germany, explained that the relatively small meteor that exploded over Chelyabinsk, Russia, in February would not have been detected using technologies available around the world today. "The problem is that even if they use more of these highly sophisticated observatories, they will not find very small projectiles, but on the other hand, the small projectiles are not very dangerous, and the opinion is that the larger ones or...