Fact: There are two moons hiding in this picture. But can you spot them? Are you sure?

The ability of moons Prometheus and Pandora to hide themselves (like they are in this new picture from Cassini) inside of Saturn’s rings owes itself to the distance that both moons hold from the planet—almost precisely the same as Saturn’s furthest ring.

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Because all three occupy more or less the same orbit, it’s easy for the moons to occasionally disappear from view. Still, if you look close enough you can still catch them, as in this picture I’ve annotated for us:

Please commence making your “That’s no moon!” jokes in the comments now.

Image: NASA/JPL-Caltech/Space Science Institute