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28                                                                        Unit 8 : Solar System


                                 Our Solar System




              Fill in the blanks with your knowledge about our solar system.




                                                    is  a combination  of  basically  8  planets  revolving




              around  the                            .  There  are  many  more,                           ,  comets,




              asteroids  and  celestial  bodies  which  are  part  of  the  Solar  System.  There  is  a




              common                                 that is acting upon all the celestial bodies which




              is  known  as                                                  .  This  force  is  also  responsible




              for  making  sure  that  nothing                                              the  earth  surface.




              Earlier, there used to be                                         in our solar system including




                                          , but now it has been disqualified due to its size. It was also




              called                                    planet.






                                Gravitational force, falls off, 9 planets, Pluto, Dwarf, Solar system, sun,

                                moon, force.



                           Light year is the distance calculated by light in one year, approximately equal
                           to 9460528400000 Kms. It is used to measure distance in space.




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