terrestrial planet meaning in English
类地行星
岩质行星
Examples
- Tpf terrestrial planet finder
类地行星发现者号 - Earth is believed to have formed into a terrestrial planet 4 . 56 billion years ago when swirling space debris and gas clumped together
当成漩涡状太空碎片聚集在一起的时候,地球被认为在45 . 6亿年前形成。 - Its density is roughly 2 . 3 times that of water . usually , the jovian planets have density less than 2 , while terrestrial planets have density more than 5
冥王星的密度约为水的2 . 3倍通常来说，类木行星的密度会小于2 ，而类地行星的密度则大于5 。 - They may have been a source of part of the atmosphere of the terrestrial planets , and they are believed to have been the planetesimal - like building blocks for some of the outer planets and their satellites
它们可能是陆地行星大气的部分来源，他们也被认为是一些外层行星及其卫星的像星子一样的构成石块。 - If such planets exist , these missions ? nasa ' s terrestrial planet finder and esa ' s darwin ? should be able to scan their atmospheres for the presence of gases that would indicate the existence of life
如果真的有这类行星存在， nasa的类地行星搜寻者，以及esa的达尔文计画等任务，将得以探测它们的大气，寻找象徵生命存在的气体。