A newly discovered small asteroid has harmlessly zipped close to Earth _ just as scientists expected.
The 16-foot-long space rock, discovered on Memorial Day, passed by early Tuesday at a distance of 8,950 miles from the Earth's surface.
NASA's Jet Propulsion Laboratory, which tracks such flybys, said the asteroid _ dubbed 2012 KT42 _ was the sixth closest asteroid approach.
It was the second asteroid encounter this week. On Monday, another asteroid, measuring 69 feet across, flew by at a distance of 32,000 miles.