About a month ago, on the way of taking my daughter to school in the morning. A big gleamy round thing with a long tail zoomed up to the sky. Both of us felt excited. We really hoped that it was an spaceship drove by aliens at that moment. I even wanted to be picked up by aliens just like something happened in a moive. In fact, it's just a rocket. Sometime, I really want to encounter some aliens who are kind and powerful, and who can take me to travel in the speed of light. I want to settle down on Mars with my family and closest friends. We can plant potatos on Mars like Matt Damon. All what I mentioned above reminds me of these big questions. Where are we from? Are we alone in the endless universe? Even are we really exist or just like the people in someone's video games? Is quark the tiniest element in the world? Who am I? Aliens, come out! Let me see you! So, believe aliens exsit or not doesn't make sense. Because when I shout to them, nobody responds.