Manhasbeentothemoon.Ithasbeenthefirststeptowardsfuturee...
問題詳情:Manhasbeentothemoon.Ithasbeenthefirststeptowardsfutureexplorationinspace.WhencomparedwiththedistancesbetweenEarthandtheotherplanets,thedistancebetweentheMoonandEarthisveryshortindeed.Mars,then...