摘要
Foryears,astronomersstruggledtocalculatetheageoftheuniverse.Estimatesrangedfrom10to20billionyearsold,afrustratinglylargespread.ButthatwasbeforethelaunchoftheHubbleSpaceTelescope,namedaftertheastronomerwhosediscovery70yearsagobeganthequesttolearntheuniverse'sage.
出版日期
2002年01月11日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)