A NASA spacecraft spotted something weird orbiting the moon. It was just a lunar neighbor (photos)

A dark streak over the moon as seen by a NASA spacecraft.

NASA's Lunar Reconnaissance Orbiter (LRO) snapped a perfectly timed photo as it crossed paths with another spacecraft orbiting the moon. 

The LRO, which has been orbiting the moon for 15 years, captured several images of the Korea Aerospace Research Institute's Danuri lunar orbiter as the two spacecraft, traveling in nearly parallel orbits, zoomed past each other in opposite directions during three orbits between March 5 and March 6, according to a statement from NASA.