改英语作文.300字rtNowadays,manythingsarestillmysteriousforhumanbeingandwearetryingtofindouttheanswertoallthesequestions.Forexample,doaliensexist?Itotallybelievethattheylivesomewhere,becausetheuniverseisunlimited

　　改英语作文.300字

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　　Nowadays,manythingsarestillmysteriousforhumanbeingandwearetryingtofindouttheanswertoallthesequestions.Forexample,doaliensexist?Itotallybelievethattheylivesomewhere,becausetheuniverseisunlimitedandscientistshavealargenumberofevidencestoexplaintheirexistence.

　　Firstofall,ourplanetisonlyatinypointinthewholeuniverse,sotheremayhaveotherlivesbeyondtheEarth.Accordingtotheastronomers’estimation,thereareover100billionothergalaxies.Thisprovesthattheuniverseisimmense.Noonecandenythefactthatotherlivesexist,becauseeventhelittlesungalaxyhasoneplanetthatisinhibited.Moreover,aftersearchingonMars,scientistfoundoutthattherearesometracesofwater.Thismeansthatitispossibletohavelivesonitinthepast.Inthiscase,anotherplanetshowstheexistenceofextraterrestrials.Thus,whyisitimpossibletohaveanotheroneinothergalaxies?

　　Somepeopleclaimthatnosolidevidencescanprovethealien’sexistence.Theyareabsolutelywrong!Manyyearsago,Mr.StevenGreeropenedaprojectnamedtheDisclosureProject.Asaresultofthis,heassembledalotofeffectiveproofsandwitnesses.Thereareenoughdocumentstoobligepeopletobelievetheirpresence.Inaddition,Dr.EdgarMitchell,theastronautofApollo14saidthathehadreceivedanincomprehensiblemessageduringaradiointerviewwhenhewasonthemoon.Hisaffirmationmustbecredible,becauseheisacelebratedastronautandscientist.Thissignificantthatalienhadalreadycontactedus,butourtechnologydoesn’tpermitustoreceivetheirmessages.

　　Inconclusion,I’mcompletelyagreedwiththefactthataliensexist,becausethegiganticuniverseisabletocontainanotherinhabitedplanetandagreatmanyevidencesdemonstratetheirexistence.Actually,wecan’tfindorcontactthemforourbackwardnessinthetechnology,butIthinkitwillbedifferentintwentyyears.