An asteroid 100 feet in diameter is expected to whiz by the Earth later today (Wednesday) at only 216-thousand miles away.
That's a close call as far as astronomers are concerned although it poses no threat to Earth. To put its distance in perspective, the big rock will pass 20-thousand miles closer than the moon.
It will be nearest to Earth at around 4:07 pm but it's not expected to be visible to the naked eye. Star-gazers can track it through a virtual telescope.
Source: ABC News