Key points from article :
NASA is required to search for near-Earth objects.
Will identify 90% of NEOs greater than 140 meters in diameter.
Potentially hazardous asteroids (PHAs) would devastate the region hit.
Construction of the Large Synoptic Survey Telescope is nearly complete.
LSST will search for objects that change position in just one hour.
Telescope in Chile should find around 65% of PHAs on its own.
