Oddbean new post about login | logout Yet even though that moon is orbiting Jupiter, it is still orbiting the earth on a larger scale, since it follows Jupiter in its orbit around the earth.
To that moon, to whoever is living there (if there's anyone living there), they are orbiting Jupiter. What matters here is the definition of the word "orbit". The curly salad drawing that you presented is not orbits. Europa going around Jupiter is an orbit. A simple, curved line around another larger object.