Test Yourself (Preview) • Ancients believed the planets to be special compared to stars because a. The surface of each planet is different from Earth’s. b. Planets repeat the same paths in the sky each week. c. Over time the planets appear to move against background stars. d. They could see Jupiter’s moons and Saturn’s rings. Test Yourself (Preview) • Ancients believed the planets to be special compared to stars because a. The surface of each planet is different from Earth’s. b. Planets repeat the same paths in the sky each week. c. Over time the planets appear to move against background stars. d. They could see Jupiter’s moons and Saturn’s rings. Test Yourself (Preview) • The light year is a unit of a. Time b. Distance c. Speed d. Age e. Weight Test Yourself (Preview) • The light year is a unit of a. Time b. Distance c. Speed d. Age e. Weight Test Yourself (Preview) • You write your home address in the order of street, town state and so on. Suppose you were writing your cosmic address in a similar manner. Which is the correct order? a. Earth, Milky Way, Solar System, Local Group b. Earth, Solar System, Local Group, Milky Way c. Earth, Solar System, Milky Way, Local Group d. Solar System, Earth, Local Group, Milky Way e. Solar System, Local Group, Milky Way, Earth Test Yourself (Preview) • You write your home address in the order of street, town state and so on. Suppose you were writing your cosmic address in a similar manner. Which is the correct order? a. Earth, Milky Way, Solar System, Local Group b. Earth, Solar System, Local Group, Milky Way c. Earth, Solar System, Milky Way, Local Group d. Solar System, Earth, Local Group, Milky Way e. Solar System, Local Group, Milky Way, Earth