摘要:天空中的哪一颗恒星最是家喻户晓呢?北极星,就它的亮度来说,虽然仅仅勉强跻身全天50颗皱亮恒星之列,然而要论起知名度,它却毫无疑问地是最热门的冠军候选人了。几百年来,这颗“指北星”一直是人们在航海导航中必不可少的帮手,它也是我们中许多人自儿时起就认识的第一颗恒星。对北半天球而言,北极星标示了地球的自转轴,不管你在哪里,只要天气好,在每个夜晚你都能在天空中的同一个位置上找到它。
注:因版权方要求,不能公开全文,如需全文,请咨询杂志社
热门期刊服务
Journal of Mountain Science Tsinghua Science and Technology Communications in Theoretical Physics Transactions of Nonferrous Metals Society of China Control Theory and Technology Frontiers of Information Technology Electronic Engineering China World Economy China Petroleum Processing Petrochemical Technology Journal of Semiconductors Progress in Natural Science:Materials International Plasma Science and Technology High Technology Letters