(FOX NEWS INSIDER) - A dead comet resembling a human skull zipped past Earth on Saturday, spooking NASA scientists who didn't see it coming until three weeks ago.
NASA said Asteroid TB135 -- which is actually a comet which has shed its gas and dust -- zoomed past at 1 p.m. ET on Saturday at 78,000 miles per hour.
At only 300,000 miles away, or 1.3 times the distance from the Earth to the moon, it's the closest encounter we've had with a large space object since 2006.
It's about 2,000 feet in diameter, about three times the size of the Colosseum in Rome and fairly large for a near-Earth object.