情景对话: Does he really live up there? I took basic astronomy and there was no mention of life, or children, on any other planets. Unless it's true that he came from a star, but that seems improbable. 知识点讲解: There was no mention of

发表于:2018-12-01 / 阅读(322) / 评论(0) 分类 2018年VOA慢速英语(一)月

By Mona Ghuneim New York 27 March 2008 Astronomers have captured an image that suggests evidence of a planet in the early stages of formation. From VOA's New York Bureau, Mona Ghuneim reports on this discovery that has opened a new window onto our en

发表于:2019-01-10 / 阅读(91) / 评论(0) 分类 VOA标准英语2008年(三月)

Dawn Spacecraft Nears Rendezvous With Dwarf Planet Ceres 黎明号探测器成功将接近谷神星轨道 LOS ANGELES NASAs Dawn spacecraft is set to reach the dwarf planet Ceres in March and begin gathering clues about whether the icy body may have

发表于:2019-01-14 / 阅读(46) / 评论(0) 分类 VOA标准英语2015年(一月)

Venus is closer to the Sun, Mars is farther from the Sun. And there is a zone in between, the blazing hot furnace Venus, the frigid Mars. That zone in between we call a habitable zone and the earth lies smack in that thing where water would be in liq

发表于:2019-01-22 / 阅读(54) / 评论(0) 分类 自然百科2011年

One type of giant planet orbits very close to its star, we call them hot Jupiters because these Jupiter-like planets are so close that they are blowtorched by the intense heat from the star. The other sort of planet we have found is also bizarre. Wev

发表于:2019-01-22 / 阅读(45) / 评论(0) 分类 自然百科2011年

All of the galaxies, all of the stars, and gas and dust and planets, and everything else that we can see with our greatest telescopes represent about half of one percent of whats actually/out there. The rest is invisible. It is mostly some mysterious

发表于:2019-01-22 / 阅读(51) / 评论(0) 分类 自然百科2011年

Because from trillions of miles away, these small planets get lost in the blinding glare of their stars brightness. The sad truth of the matter is that earth-like planets are near cosmic specks of dust. And therefore detecting them is really quite ha

发表于:2019-01-22 / 阅读(59) / 评论(0) 分类 自然百科2010年

Those planets are all going to be so hot, and you cant develop something as complex as life. Scientists have gone back to the drawing board, looking to find worlds capable of supporting life, small rocky planets like earth. We dont know that life has

发表于:2019-01-22 / 阅读(59) / 评论(0) 分类 自然百科2010年

The Time Before Fire What is fire anyway? Well, fire is rapid oxidization . Its the energy released when oxygen atoms start combining with carbon and hydrogen atoms. Exactly, so without oxygen in the air, nothing burns. You mean there was a time befo

发表于:2019-01-26 / 阅读(56) / 评论(0) 分类 英语听力文摘 English Digest

Weve recently been talking about the Fermi Paradox, attributed to Nobel-winning physicist Enrico Fermi. According to reasonable estimates of how many stars have planets, how many planets may be suitable for the evolution of organisms, and so on, our

发表于:2019-02-24 / 阅读(70) / 评论(0) 分类 英语听力文摘 English Digest