Lindley Johnson, manager of NASA's Near Earth Object program told AP that the space agency is reassessing what size rocks to look for and how often they are likely to hit. It also looking into how the government should react if an asteroid is headed for Earth.
He told that NASA has reactivated a dormant orbiting telescope called WISE specifically to hunt for asteroids and the agency is expanding ground-based sky searches that might give a few extra days' notice of smaller meteors like the Russian one.
