Add Yahoo as a preferred source to see more of our stories on Google. A newly discovered asteroid the size of an adult blue whale is set to fly past Earth today (May 18) at 24% of the average ...

With an estimated diameter of 1,443 feet ( 440 meters ), 1997 NC1's size and potential to pass close to Earth during future orbits have led to it being designated as a potentially hazardous asteroid ...

NASA’s asteroid trackers have just watched a school‑bus‑sized space rock make a safe, distant pass by our planet, part of a steady stream of small objects that routinely zip through the inner solar ...

Every day, software at NASA’s Jet Propulsion Laboratory scans the orbits of thousands of known near-Earth objects and flags any that will pass within 4.6 million miles of our planet. That distance, ...