The spaceship is about to launch! Kids, please make full preparations. The next stop is Earth School! Here, you will discover knowledge about the Earth and the universe. Begin with the Big Bang, then gradually learn the origin of black holes, planets, and galaxies. Interactive animations and easy operations inspire interest in science. Our spaceship is now in the solar system. We can overlook the Earth and find that nearly 71% of its surface is covered by water. By the way, do you know where