����������������byClaireDanielCover,©NASA;p.3,©NASA-KSC;p.4,©NASA-HQ-GRIN;p.5,©NASA;pp.6,7,©NASA;p.8,©NASA-KSC;pp.10,11,12,©NASA;p.13,©NASALangLeyResearchCenter;p.14,©NASA.Copyright©byHarcourt,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopy,recording,oranyinformationstorageandretrievalsystem,withoutpermissioninwritingfromthepublisher.RequestsforpermissiontomakecopiesofanypartoftheworkshouldbeaddressedtoSchoolPer-missionsandCopyrights,Harcourt,Inc.,6277SeaHarborDrive,Orlando,Florida32887-6777.Fax:407-345-2418.HARCOURTandtheHarcourtLogoaretrademarksofHarcourt,Inc.,registeredintheUnitedStatesofAmericaand/orotherjurisdictions.PrintedinUnitedStatesofAmericaISBN10:0-15-351174-5ISBN13:978-0-15-351174-5OrderingOptionsISBN10:0-15-350603-2(Grade6On-LevelCollection)ISBN13:978-0-15-350603-1(Grade6On-LevelCollection)ISBN10:0-15-358003-8(packageof5)ISBN13:978-0-15-358003-1(packageof5)Ifyouhavereceivedthesematerialsasexaminationcopiesfreeofcharge,HarcourtSchoolPub-lishersretainstitletothematerialsandtheymaynotberesold.Resaleofexaminationcopiesisstrictlyprohibitedandisillegal.Possessionofthispublicationinprintformatdoesnotentitleuserstoconvertthispublication,oranyportionofit,intoelectronicformat.12345678910179121110090807063OnFebruary20,1962,JohnGlennsatinsidethespacecraftFriendship7.Forfourhoursandfifty-fiveminutes,heflewinspace,orbitingEarththreetimes.Ashegazeddownatthemostprominentfeatureoutsidehiswindow—themottledgreenandblueplanet,Earth,below—hemayhaveknownthathewouldmakethehistorybooks.Glennhadbecomethefirsthumantoworkinspace.Sincethatday,astronautshavecontinuedtoexplorespace,bothonthegroundandabove.TheUnitedStatesspaceagency,NASA(NationalAeronauticsandSpaceAdministration),wasestablishedforthepurposeofspaceexplorationin1958.NASAisthehomeforastronauts—themenandwomenwhoworkinspace.4JobsinSpaceEachspacemissionisstaffedwithpeoplewhoeachhaveaspecialsetoftalents....
