My colleague, radio astronomer Eric Chaisson, has written at length that only "ethical" civilizations avoid destroying themselves.
我的同事，电射天文学家艾瑞克·蔡森曾详细地描述过，只有有道德的文明可以避免自我毁灭。
"My colleague, radio astronomer Eric Chaisson, has written at length that only" ethical "civilizations avoid destroying themselves."
我的同事，电射天文学家艾瑞克·蔡森曾详细地描述过，只有有道德的文明可以避免自我毁灭。
Radio astronomer Melanie Johnston-Hollitt at Victoria University, Wellington , NZ, has collaborated with IBM for developing the system.
来自新西兰惠灵顿维多利亚大学的射电天文学家Melanie Johnston-Hollitt与IBM合作开发了该系统。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951; it must be known to any kind of radio astronomer in the universe.
它是人们于1951年发现的太空氢原子的天然发射频率，宇宙间任何一种射电天文学家都必定知道它。
Also on display for the first time is a section of the radio telescope which radio astronomer Jocelyn Bell used to discover pulsars - small, fast-rotating stars - in the 1960s.
展览还首次展出了20世纪六十年代射电天文学家Jocelyn Bell发现高速运转的小恒星-脉冲星时所使用的射电望远镜。
Also on display for the first time is a section of the radio telescope which radio astronomer Jocelyn Bell used to discover pulsars - small, fast-rotating stars - in the 1960s.
展览还首次展出了20世纪六十年代射电天文学家Jocelyn Bell发现高速运转的小恒星-脉冲星时所使用的射电望远镜。
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