单词：kuiper
[人名] 凯珀
词型变化：名词复数形式 : kuipers
单词：kuiper 相关文章
AS IT IS 2015-07-15 US Spacecraft Flies by Pluto After Nine-Year Trip It has taken more than nine years for an American spacecraft to reach the far edge of our solar system. The spacecraft, named New Horizons, sailed past the dwarf planet Pluto on Tu
发表于:2019-01-12 / 阅读(347) / 评论(0)
2015年VOA慢速英语(七)月
2015年VOA慢速英语(七)月
By David McAlary Washington 01 February 2006 Claims that our solar system has a 10th planet beyond Pluto are supported by a new finding by German and French astronomers. They calculate that it is bigg
发表于:2019-01-13 / 阅读(413) / 评论(0)
2006年VOA标准英语（二月）
2006年VOA标准英语（二月）
As for Pluto itself, nobody is quite sure how big it is, or what it is made of, what kind of atmosphere it has, or even what it really is. A lot of astronomers believe it isn't a planet at all, but merely the largest object so far found in a zone of
发表于:2019-01-29 / 阅读(319) / 评论(0)
万物简史
万物简史