IN 
 1998,THE  FIRST  component  of   the  International  space   station  
(ISS)  were  launched  from  Russia  and   the  US.The  ISS  will  
provide   a  unique  place  to  study    the  Earth  ,  and  to  see   
,how  the  sun;s violent   eruptions    affect  the   operation  of  the
 communications   satellites  ,  and  the weather  on  the   Earth .The 
 effect  of  gravity    inside  the  station    will  be   minuscule   
and  scientists   will   be able     to  study  a  myriad  of  subtle   
 biological  ,physical,  and  chemical  reactions ,  which  are  
impossible  to   duplicate   on  Earth.Complete   construction  will  
require   a  total   of  45  space  missions    many hours  of space  
walking     by  astronauts .The  station  is  scheduled   to   be  
permanently   crewed  from   the  eighth  misssion  
onwards.Astronauts    will  spend  many  months  at a  time    on  the  
station , testing  equipments   for  future  space    exploration  
missions .
SLEEP IN SPACE.- Asrronauts sleep in an upright position so that they receive a constant flow of air .If they slept in horizontally , the effects of weightlessness could result in suffocation from exhaled carbon dioxide .Thus astronauts remains stationary by crossing his arms and using straps to anchor himself to the wall of the module.
MIR SPACE STATION -NOW referred to as Phase one of the International space station .Mir was home to American,Russian, and European astronauts as they learned to work together in space.
INTERNATIONAL SPACE STATION
   
 
SLEEP IN SPACE.- Asrronauts sleep in an upright position so that they receive a constant flow of air .If they slept in horizontally , the effects of weightlessness could result in suffocation from exhaled carbon dioxide .Thus astronauts remains stationary by crossing his arms and using straps to anchor himself to the wall of the module.
MIR SPACE STATION -NOW referred to as Phase one of the International space station .Mir was home to American,Russian, and European astronauts as they learned to work together in space.
INTERNATIONAL SPACE STATION


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