移民太空 先看看太空生活对身体的影响吧

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1、移民太空先看看太空生活对身体的影响吧移民太空？先看看太空生活对身体的影响吧AfterlivingfornearlyayearaboardtheInternationalSpaceStation,astronautScottKellyreturnedtoEarthinMarch.Hismissiontospaceisnowcomplete,butanotheroneisstillunderway:ScottishalfofanovelNASAstudydesignedtoreveal“thesubtleeffectsandchangesthatmayoccurinspaceflig

2、htascomparedtoEarth.”Thestudy’sotherhalf?HisidenticaltwinbrotherMark,himselfaretiredNASAastronaut.WhileScottwasinspacefollowingastrictschedule,dietandexerciseroutine,MarkwasleadinganormallifeinArizona.Now,usingMarkasacontrol,NASAresearchersareperformingaseriesof10studiestodeterminehowScott’sb

3、iologywasalteredfromayearspentcirclingtheEarthat17,000milesperhour.Samplesfromthetwins’weretakenbeforeandduringthemission,andarebeingcollectednowthatScotthasreturnedhome.Whiletheresultswon’tbeinforatleastayear,someoftheresearchers’involvedhostedaRedditAMAtoanswerusers’questionsaboutthestudyan

4、ditspossibleimplications.Here’swhattheyknowsofar:ScottandMarkareidealtestsubjects.They’reabout“assimilarinnatureandnurtureasyoucanget–identicaltwins,bothastronauts,”saidSusanBailey,aprofessorofradiationcancerbiologyandoncologyatColoradoStateUniversity,andoneofthestudy’sinvestigators.Usingasto

5、ckpileofbaselinedata,theresearchersshouldbeabletoestablish“molecularchangesthataremostimpactedbyspacetravel,sowecanplanforwaystomitigateandprotectagainstthem,”addedChristopherMason,anassociateprofessorofphysiologyandbiophysicsandanotherinvestigatorontheproject.Sustainedtimeinspaceleavesthebod

6、yvulnerable.“SpaceflightisaltogetherdifferentfromlivingonEarth.Inadditiontoweightlessness,theatmosphericcomposition(CO2levels),ambientnoiselevels,stresslevels,etc.ThereareALOTofvariables,”KjellLindgren,aNASAastronaut,saidintheAMA.Thesevariables,particularlymicrogravity,havebeenshowntoputadded

7、stressonthebody,leadingtoboneloss,muscleloss,cardiovasculardeconditioningandvestibularchanges.BecauseScottspentanextendedperiodoftimeinspace,hemayexhibitmoreserious,permanenteffects.IntheAMA,Lindgrensaidhe’dspokentoScottabouthisrecovery,“andh