Page 16 - SOLAR SYSTEM
P. 16

Dwarf' planets

                                                                    '   I   I   •   I


           cr-                                                2  6        3
                                                              2326      200
           rJ" I  Dwarf planets are

           sinall  worlds  orbiting the
           Sun  that are not big
           enough  to be classed  as
                                                 .t. These are the first five dwa,-f r,Janets to
           planets. There are five               be  oftlclally recognized.  More discoveries are
                                                 cet-ta1n to follow.
           'official' dwarf planets, but

                                                        a\<.eS  \eSS  tt,an
                                                 'f Ceres t to orl>it the
           found and may soon join                •·-ie  years   h •urther
                                                  11  sun. Eris,  111UC  1
                                                          s years.
          the dwarf planet club.                      tal<eS  S  1
                                                  QIN  a'/  '
           r;  r;
           1   1
            .,   ..,  Pluto was a planet for
          16 years. When Pluto was discovered
          in 1930, it became the Solar System's
          ninth planet. But when astronomers
          started finding more smaller worlds like
          Pluto, they decided to call them dwarf
          planets. So in 2006, Pluto became a
        ,  dwarf planet. Pluto's orbit is oval-
          shaped, sometimes
       "  crossing inside
          Neptune's orbit.







            Dwal'i r,lanet
          Pluto has  five
          moons.  The biggest
          is called Chal'On.  A                              even though  it
          sr,acecraft called New                           is so far away,
          Horizon, will  arrive at                         Makemake reflects
          Pluto in 1-015 to stucly                         Just enough  sunlight
          the clwal'i r,lanet ancl  its                    to be  seen by large
          moons for the first time.                        telescor,es on earth.
   11   12   13   14   15   16   17   18   19   20   21