(CNN NEWSOURCE) Don't you hate it when you're trying to take the perfect picture and someone photobombs it?
NASA scientists say it happened to them when they were taking pictures of the Earth last week over a four-hour period.
The culprit? The Moon!
It turns out, though, that NASA scientists are actually excited about this photobomb. That's because the pictures allow them to see the far side of the Moon, which is never seen from Earth.
NASA say this is the second time the Moon has photobombed them in a year.