NASA is watching closer than ever as another space rock gives Earth a close shave. Soon, we'll get even closer as a new spacecraft visits an asteroid. A giant space rock is hurtling toward Earth eight times faster than a speeding bullet, and it's scheduled to buzz our geosynchronous satellites tomorrow around dinnertime. It's the second big asteroid flyby in as many months, and the second that actually poses no harm to Earth any time in the foreseeable future. Take heart--while it's true that NASA and international observatories don't know about everything up there, they actually do know a ... Read More