Beyond the Solar System: Exploring Galaxies, Black Holes, Alien Planets, and More; A History with 21 Activities

Beyond the Solar System: Exploring Galaxies, Black Holes, Alien Planets, and More; A History with 21 Activities — page 9
This photograph of the Big Dipper was taken in March when it is upside down and its handle is to the right Can you see it NASA The Sun moon and stars appear to move disap pear and reappear in the sky in predictable patterns Figuring out tracking and predicting these heavenly patterns made the first clocks calendars and naviga tion tools possible The waning and waxing moon as it changes from full to new to full again marks the passage of 30 sunsets and sunrises a lunar month The stars Sun moon and the planets rise and set not because they are moving but because Earth is Our mobile planet gives us a constantly changing view of what surrounds us out in space Earth's tilted posture as it travels around the Sun each year creates seasons by altering day lengths and the arc of the Sun's daily path across the sky These changes announce the coming and going of