Universeisaspace,time,matterandenergy,posedbycontinuum.Isasynthesisofallspaceandtime.Generalunderstandingoftheuniversethatweexistedatemporalandspatialcontinuoussystem,includingallmaterials,energy,andevents.Accordingtobigbangcosmologicalmodeloftheuniverseprojection,ageoftheuniverseabout20billionyears.

　　Theshapeoftheuniverseisstillunknown,humansinaudacitytoimagine.Somepeoplesaythattheuniverseisinfactahuman-likecreatureinasmallcell.Theshapeoftheuniverseaccordingtothebigbangtheory,thehistoryoftheuniversecanbeexpressedasaright-sideopeningofclosedsurfaces.LeftCenterforbangsingularity,right13.7billionyearstoreachournowopen.Fromlefttorightare:Singularity,400,000yearsofexpansion,nearly400millionyearsintheearlydarkphase,stars,galaxiesandplanetsappeardevelopmentphase,containsdarkmatteranddarkenergyacceleratingexpansionperiod.

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