THE PLANETS AND MOONS IN OUR SOLAR SYSTEM ARE OUT OF THIS WORLD Some are hotter than an oven and some are much colder than a freezer Some are small and rocky while others are huge and mostly made of gas As you explore these worlds you'll discover giant canyons active volcanoes strange kinds of ice storms bigger than Earth and much more The Planetary SocietyⓇ empowers people around the world to advance space science and exploration On behalf of The Planetary Society® including our tens of thousands of members here's wishing you the joy of discovery Onward Bill Nye Bill Nye CEO The Planetary Society®
30 30 31 TABLE OF CONTENTS CHAPTER 1 Planet of Wind and Ice 4 CHAPTER 2 Finding Storms and More 12 CHAPTER 3 Exploring Neptune Glossary Learn More Index 24
4 CHAPTER 1 PLANET OF WIND AND ICE Our solar system includes everything that goes around the Sun. There are eight planets Neptune is the farthest planet from the Sun. MEET PLANET NEPTUNE Neptune is a little smaller than Uranus and much bigger than Earth About fifty eight Earths could fit inside Neptune Neptune right is much larger than Earth
5 Days are shorter on Neptune than on Earth An Earth day is twenty four hours A Neptune day is about sixteen hours Years are much longer on Neptune than on Earth A year is the time it takes a planet to go all the way around the Sun. One Earth year is about 365 days One Neptune year is about 164 Earth years NEPTUNE FAST FACTS Size Could fit about fifty eight Earths inside Neptune Distance from the Sun 2.8 billion miles 4.5 billion km Length of day About sixteen hours Length of year About 164 Earth years Number of moons At least fourteen
