The explosion was caused by a meteoroid that hit the lunar surface . ( CNN ) -- It was visible on Earth without a cloud . NASA sees thousands of lunar meteoroid impacts on the moon each year . The meteoroid was traveling 100 miles when it crashed into the crater .
The explosion was caused by a meteoroid that hit the lunar surface . It was visible on Earth without a cloud . NASA sees thousands of lunar meteoroid impacts on the moon each year . The meteoroid was traveling 100 miles when it crashed into the crater .