I had a Lucid Dream once, I was on another planet. And I knew I was on another planet, but why I knew this, I don't know. I was on Venus, the planet that has numorous vulcanos on it, but where I was, it was beautiful, very beautiful. I walked down some....way to nowhere, but I came out in a small lake, and I saw a large mechanical thing with real large arms swimming in it. And then my bell ringed
With the fact that I love astronomy this was quite the experience for me.