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An asteroid half the size of Mount Everest is heading towards Earth next month, but scientists say it is not expected to collide with us.

The object, called 52768 (1998 OR2), is 1 to 2.5 miles wide and will pass within 3,908,791 miles, moving at 19,461 miles per hour.

The asteroid was first discovered by NASA in 1998, and is said to be 'large enough to cause global effects' if it were to hit Earth.

The flyby is expected for Wednesday, April 29 at 4:56 AM ET, according to NASA's Center for Near Earth Object Studies that tracks Near-Earth Objects (NEAT) that could collide with Earth.