 Well, we're unique in the sense that in our solar system, the inner planets, the rocky planets, so Mercury, Venus, Earth and Mars, we are the only one that now has oceans. Now, in the past, Venus and Mars had oceans as well, and it looks like Venus' oceans may have survived until a billion years ago, you know, relatively recently. And Mars' oceans, what happened to them, I think, is less clear, but they kind of