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IT’S ALL

                                                                                                                                Saturn
                                                                                                                                                                                         Neptune
                     ABOUT MATH!






                                                                                                                                                                                                     Uranus



           This book will take you on a                   Space Numbers                                                  Mars                       Jupiter
           journey through the world of                   Our Solar System is made up
           numbers—from zero to infinity                  of eight major planets that

           —demonstrating how we                          orbit one Sun. We live on

           use numbers and how math                       Earth, which only has one
           shapes our world. To make                      Moon. But beyond this,                                        Earth                                                       Jupiter has four large
           sense of really big numbers,                   space soon makes us think                                                                                                 moons—Io, Europa,
                                                                                                                                                                                    Ganymede, and Callisto
           you need to relate them to                     of really big numbers.                                                                                                     —which were discovered

           your everyday life.                                                                                                                                                       by Galileo in 1610.



                                                                                       Venus
           Talking                                                                                                                                               Distant Galaxies


           Billions
                                                                                          Mercury                                                                        Images taken with a special
           Scientists believe that the                                                                                                                                     camera on the Hubble
           Solar System has existed                                                                                                                                       Space Telescope show that

           for about 4.5 billion years,                                                                                                                                 a distant galaxy could be as far
           and there are more stars                                                                                                                                   as 12.7 billion light-years away.

           in the Universe than                                                                                                                                     If you think that a single light-year
           grains of sand on all the                                                                                                                              is 6 trillion miles (6,000,000,000,000),

           beaches on Earth. That’s                                             Sun                                                                              then you’ll see we’re talking about
           more than a billion trillion!                                                                                                                         an astronomical distance!





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