Scientists Just Heard a Space Rock Hit a $500 Million Space Camera 

If a micrometeoroid strikes the Lunar Reconnaissance Orbiter more than 230,000 miles from anyone around to hear it, does it make a sound? Yes!

The sound is: SPANG!

That’s the frankly remarkable finding of Alex Parker, a planetary astronomer at the Southwest Research Institute. Parker was looking at images from the LRO — a NASA science robot orbiting the moon — and spotted the telltale vibrations of a micrometeoroid strike on one of the $504 million gadget’s cameras while a picture was being taken.

Now, sound doesn’t travel in the vacuum of space, and the LRO doesn’t have microphones. But sound does travel through the solid workings of an orbiting camera. And Parker, an expert in this kind of image analysis, was able to convert the vibrations of the image into a playable sound file.

Here are his tweets explaining the process:

SPANG!