How can we tell when something hits the moon if we can’t hear it? NASA's Goddard Space Flight CenterThe main difference between a meteor shower on Earth and that same meteor shower on the Moon is that the Moon has no atmosphere. On the Moon, you’d expect these meteorites to make it all the way down to the surface of the Moon before there was any real observable trace of them. NASA runs the Automated Lunar and Meteor Observatory (ALAMO) from Alabama, which is a multi-telescope setup and observes the shadowed part of the moon for small flashes of light. A similar setup exists in Spain, with five telescopes working together to observe the shadowy Moon, called the Moon Impacts Detection and Analysis System (MIDAS).

Source: Forbes March 11, 2017 17:56 UTC