Hello. I am Mr. Choi Jong-su, the teacher in charge of the Space class. I know very well how vast and wonderful the universe is! That is why I majored in Astronomy and Space Science, and currently conduct classes where I imagine the universe with the children. I have met many students in various places, and I am currently also active as a teacher at the Junior Astronomy School. The subject of the universe is an infinite world with no right answers and no end! That is why I think many students show such a high level of interest in the universe. Don't you agree? To learn about the universe, we start with the simplest method of observing with our own eyes. We can view the universe in greater detail using tools like telescopes, and as curiosity grows, humans are actually sending unmanned spacecraft—such as probes, satellites, and robots—to investigate! As we explore the universe in this way, the things we previously knew about it have changed. Just like how we discovered through a telescope that the moon, which we used to think was the face of God, actually had a hole in it, and that the sun, which we thought was the face of a higher God, actually had a dot. Looking at you all, who have fallen for the charm of the universe, reminds me of my own past when I learned about the universe piece by piece. Friends, let's learn about the topic of space exploration with the teacher and grow your interest in space!