英语四级

听力入门英语演讲VOA慢速英语美文听力教程英语新闻名校课程听力节目影视听力英语视频

BBC媒体英语新闻:Eight new planets 太阳系外八颗新行星中包括“外星球”(mp3下载)

cocotang 于2015-06-19发布 l 已有人浏览
增大字体 减小字体
BBC媒体英语新闻:太阳系外八颗新行星中包括“外星球”,含有新闻文本及mp3免费下载。
    小E英语欢迎您,请点击播放按钮开始播放……

Spotting ‘Alien Earths’ is the reason the Kepler spacecraft was launched six years ago. It looks deep into space for tell-tale dips in the brightness of faraway stars.

Eight new so-called exoplanets were revealed here, taking Kepler’s overall tally to more than 1,000. But only very few planets from that total are thought to be Earth-like and habitable, sitting in a temperate Goldilocks zone around their various suns.

One of the new arrivals, called Kepler 438b, is the most like our home that astronomers have ever seen: just 12% bigger than Earth and 40% warmer.

They say if we could stand on its surface, nearly 500 light years away, the sky would be red because of the dwarf star it has for a sun.

 1 2 下一页

分享到

添加到收藏

听力节目排行