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Unit4Astronomy:thescienceofthestarsHowmanyplanetsarethereintheSolarSystem?Howmuchdoyouknowabouttheuniverse?Whatarethey?ThePlanetisnamedaftertheRomangodofwar.It'sdistinctiverustcolorisred.Itssurfacefeaturesmanymountains,canyonsandevenpolaricecapsthatlookalotlikethosehereonEarth.Wearedoingsomeresearchtofindoutwhetherthereislifeformsonit.MarsSinceithasnoprotectiveatmosphere,thetemperatureonthesurfacerangesfromextremelyhotonthesidefacingtheSuntoextremelycoldonthesidethatfacesawayfromtheSun.ItistheclosestplanettotheSun.MercuryItisnamedaftertheRomangoddessofloveandbeauty,butthesurfaceisaveryunpleasantplacefeaturingveryhightemperatures,windsthatblowhundredsofmilesperhourandanatmosphereofsulfuricacid.VenusIthasatleastsixty-onemoonsandfeaturestheGreatRedSpot,whichisahugestormthathasbeenobservedfromhereonEarthforoverthreehundredyears.Itisthelargestplanetinoursolarsystem.JupiterIthasafascinatingsystemofrings.Ithassomanymoonsthatitislikeaminiaturesolarsystem.SaturnItisoneofthegiantgasplanetsinthesolarsystem.Ithasaveryfaintringsystemthatwedidn'tknowexisteduntiltheplanetwasvisitedbytheVoyagerspacecraft.UranusItwasthelaststoptheVoyagermissionmadebeforeifleftoursolarsystem.Ithaswindsthatblowhundredsofmilesperhourandamoonthatfeaturesgeysersofnitrogenthateruptandleavedarkmarksonthesurface.NeptunePlutoissofarawaythattheSunisjustadimpointoflightthatlooksalotlikeanyotherstar.Itisthesmallestandmostmysteriousplanetinoursolarsystem.Ithasonemoon,Charon,thatisalmostasbigastheplanetitself.PlutoCOUNTRYNAMEDATEFLIGHTDURATIONUSSR12hours1961USAAlanShepard196115minutesChinaYangLiwei200321hoursYuriGagarinShenzhouVspacecraftTostudyasubjectscientificallystepbystep:trytobeobjectivesetoutyourideatobetesteddesignanexperimenttotesttheideaanalysetheresultsdrawaconclusionSkillsneededtobeascientist:accuracyalogicalapproachthoroughwritingoftheexperimentsosomeonelsecouldredotheexperimentfromyournotesbeabletodrawconclusionsfromtheevidenceandnotimposeconclusionsonthedata