StephenHawkingwasoneofthemostfamousscientistsinthiscent...
問題詳情：StephenHawkingwasoneofthemostfamousscientistsinthiscentury.Hewasbornin1942.He’saworldwell-knownonspaceandtime.Stephenisresearchingsomeverybigquestions,suchas:Howdidtheuniversebegin?Howwillite...