关于太阳,地球,月亮的英语作文急！急！赶快！

Themoonoriginmystery:forlunarorigins,scientistsputforwardthreekindsoftheories:capturesaid,homologyandearthdividedthemalldefective,said,buttheApollowouldhelpproof,whichseemleastlikelytheoryisthebesttheory.Somescientiststhink,themooniswithearthin46billionyearsago,fromagroupofcosmicdustgenerator.Anothertheoryisthatthemoonistheearth'schildren,isperhapsthePacificdigout.HoweverApollomoonexplorationresultsshowthattheearthandthemoonthecompositionofthedifferenceisverybig,somescientistshaveproposedanotherhypothesis,namelycaptured.Theythinkthatthemoonisaccidentallybrokeintogravitationalfield,andbelockedinthepresentorbit.However,itistheoreticallyexplaintheprocessmechanism,isextremelydifficult.Therefore,theabovethreetheoryalldifficulttoholdwater.Asrobinhallamespeciallybydrsaid:toexplainthemoondoesnotexist,thantoexplainthemoonexisteasier.

Themoonageriddle:whatisamazingisthattherocksamplesfromthemoonback,viaanalysisfoundthatabout99percentagethanearth90%oldestrocksmoreolder.Armstronginquietseaafterlandingpickedupthefirstpieceofrock'sageis36billionyearsold.Someotherrockage4.3billionyearsold,4.6billionyearsoldand45billionyearsold——italmostandearthandsolarsystemitself,theearthisasoldastheoldestrocksis37billionyearsold.In1973,theworldsymposiumonthemoonwasaagedeterminationfor53billionyearsoldofmoonrocks.Ismoresurprisingisthattheseancientrocksarecollectedfromscientistsbelievetobetheyoungestareaonthemoon.Inlightoftheevidence,somescientistsproposethatthemoononearthformedbeforelongwasestablishedininterstellarspaceformed.

Thelunarsoilyearsolderthanrockgreatermystery:themoonancientrockhasmadescientistshelpless,however,andtheserocks,comparedtothe