(CNN) - An asteroid the size of an aircraft carrier will pass Earth to within eight-tenths of the distance of the moon Tuesday, the closest approach to Earth of an object this size in more than 30 years.
The closest approach will occur at 6:28 p.m. ET when the asteroid passes within 202,000 miles of our planet, NASA said.
The space agency classified the asteroid as a "potentially hazardous object."
If the asteroid were to crash into Earth, it could cause a 4,000 megaton blast and a magnitude 7.0 earthquake, according to scientists at Purdue University. If it fell into the ocean, it could cause a 70-foot high tsunami within 60 miles of the crash site, the experts said.FULL STORY