NASA scientists said one of two small asteroids passed between the Earth and the moon on Wednesday.
The first one passed by early Wednesday morning. The second rock, estimated to be 20 by 46 feet long, is on the same course and is scheduled to pass late Wednesday afternoon.
Space.com reported that the two asteroids are unrelated. They were discovered by the NASA-funded Catalina Sky Survey. The first object passed closer to the Earth over the Pacific Ocean. The second will pass closer to Antarctica.
NASA says there was never a chance of either of the two asteroids colliding with the Earth.
The second asteroid pass won't be visible to the naked eye. However, it can be seen through an amateur telescope.