The asteroid is called 52768 (1998 OR2), and it was first spotted in 1998. On April 29, it will pass within 3,908,791 miles of Earth, moving at 19,461 miles per hour. That's still 16 times farther than the distance between Earth and the moon. The flyby is expected to occur on Wednesday, April 29, at 5:56 a.m. ET, according to NASA's Center for Near-Earth Object Studies. The center tracks Near-Earth Objects, or NEOs, that could collide with Earth. Arecibo Observatory is a National Science Foundation facility managed by the University of Central Florida. A team of experts has been monitoring...