The Hubble一只望远镜的革命英语美文
TheHubble一只望远镜的革命Whenmostpeoplethinkofspace,whatcometomindarenameslikeJohnGlennandNeilArmstrong.Whenscientiststhinkaboutspace,thenamethatcomestomindisHubble,aspacetelescopewesentonatwenty-year...
TheHubble一只望远镜的革命Whenmostpeoplethinkofspace,whatcometomindarenameslikeJohnGlennandNeilArmstrong.Whenscientiststhinkaboutspace,thenamethatcomestomindisHubble,aspacetelescopewesentonatwenty-year...
TroublewiththeHubble哈勃望远镜的困境TheHubbletelescopewaslaunchedintospacebyNASAonApril20,1990atacostofoverabilliondollars.RightfromthestarttherewastroublewiththeHubble.Thepicturesitsentuswereverydisa...