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SPACE-THE MOON

THE   MOON  IS  THE  EARTH'S    ONLY  NATURAL  SATELLITE.It  is   relatively     large  for  a   moon  ,  with  a  diameter    of   3,470  km  - just  over    a  quarter   that    of  the  Earth.The  Moon   take  the  same  time   to  rotates   on  its  axis   as  it  takes   to  orbit  the  Earth(27.5 days),  and  so  the   same  side (the  near  side)  always  faces  us.However, the  amount  of  the  surface   we  can  see- the  phases  of  Moon-depends  on  how  much  of  the near side   is  in  the  sunlight.
Th  Moon  is  dry   and   barren   with no  atmosphere  or  water.It  consists  of  solid  rocks ,although  its  core  may  contain   molten  rock or  iron.The  surface  is  dusty,  with   highlands  covered  in  craters  caused  by  meteorite   impacts,  and   lowlands   in  which  large   craters  have  been  filled   by   solidified  lava  to  form  dark  areas    called  maria  or  "seas".Maria  occurs  mainly  on  the  near  side .  which  has  a  thinner  crust  than   the  far  side .Many  of  the  craters  are  rimmed  by  the  mountain  ranges  that  form  the  crater   walls  and  can  be  thousands  of  metres   high.

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