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AcometTheUniverseTheuniverseisahugewide-openspacethatholdseverythingfromthesmallestparticletothebiggestgalaxy.NooneknowsjusthowbigtheUniverseis.Scientistsbelievethatabout13.7billionyearsago,apowerfulexplosioncalledtheBigBanghappened.Thispowerfulexplosionsettheuniverseintomotionandthismotioncontinuestoday.Scientistsarenotyetsureifthemotionwillstop,changedirection,orkeepgoingforever.theEarthisourhome.We'relivingontheEarth,anditisthemostbeautifulinthesolarsystem.Ithaslotsofwaterandplants.AndthemoonistheEarth'spartner.ItgoesaroundtheEarth.AndotherplanetsareveryfarfromtheEarth.Sothepeoplecan'treachthemandnoneofthemhasanenvironmentwithair.Thepeoplealsocan'tliveinthem.黑洞Ablackholeisastronggravityofobjects.Anditcan‘thavebeenengulfingmaterial.Accordingtothelatestsuperstringtheory（超弦理论）.Ouruniverseiselevendimensional（维）十一维空间三维空间Taurusthecrabnebula金牛座蟹状星云Cygnusopenclusters天鹅座疏散星团人马座礁湖星云TheAndromedanebula仙女座星云猎犬座球状星团CanesvortexNebula猎犬座旋涡星云ItisthecenteroftheMilkyWaygalaxyabout25000lightyearsawayThereismuchbeautifulandmagicviewintheuniverse.