Almost all planets have a moon, or even several moons close by. Jupiter's moon, Europa, is completely covered with ice and as smooth as a bowling ball. Researchers assume there's water under the sheet of ice. And water means life. Another one of Jupiter's moons, Io, is more like a pizza than a bowling ball. There are a number of volcanoes erupting repeatedly on Io. Lava and ash break through the surface, changing its appearance every day. Billions of small moons surround the larger planets, Jupiter, Saturn, Uranus, and Neptune. Two potato-shaped moons circle Mars, Phobos and Deimos. They were given these names because in Greek mythology, Phobos and Deimos were the horses who pulled the chariot of the god Mars. I'll go down in history. I will be the first person on the moon, even before Armstrong. Are you going to start that again? One small step for me, one giant leap for mankind. Forget it, Theo. My dear Tess, you once again underestimate me beyond measure. It's not that hard with a clever mind like mine. Oh, yeah? It's pretty easy. Just look in my workshop. What's that supposed to be? The time machine I built. Time machine? Exactly. This will take us back in time. Then we'll secretly join the Apollo 11 mission to the moon, and I'll be the first person on the moon, even before Armstrong. I will be world famous. I see. I'll go down in history. And that's supposed to work. Your time machine looks more like a shower. The subtle difference, my dear, is that there's no water coming out up there, but rather a timeline. Sure. We just have to step under the timeline, and we'll journey into the past. Come on. Just a minute. Before we step under your time shower and travel to the past, maybe we should sleep a bit first. What? I don't need to sleep. I feel great. How about you, Quentin?