Blast off on a trip through our Solar System! Information about each planet. Phases of the Moon Do you know why the moon is sometimes visible during the day, but sometimes only during the night? Try this interactive tutorial to help you learn about Phases of the Moon. Take a tour of the Solar System Sea and Sky invites you to take a tour of our amazing planetary system. The Earth Viewer See how the Earth's rotation affects day and night. Day and Night/Seasons/Moon Phases Check out this interactive demonstration of day and night.
