I would be less worried about people confusing it with some other Europa and more that people simply don't know what it is. Adding "Jupiter's moon Europa" would

I would be less worried about people confusing it with some other Europa and more that people simply don't know what it is. Adding "Jupiter's moon Europa" would still mean the same for you and me who know that Jupiter has a moon named Europe. But for someone who doesn't know, the difference means they understand the context better.