[网络] 矮椭球星系；矮球状星系

2007年VOA慢速英语special200708150045

VOICE ONE: I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty with EXPLORATIONS in VOA Special English. This week, we tell about a project to identify images of one million galaxies that have been captured by the Sloan Digital Sky Survey. We also tell

发表于:2018-12-07 / 阅读(63) / 评论(0)

VOA慢速英语2007年（八）月

SSS 2011-06-24

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1930 astronomer Clyde Tombaugh discovered the dwarf planet Pluto while looking at photographs of the night sky. Pluto was the first object to be found

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Scientific American(六)月

SSS 2010-01-15

For astronomers who study the large-scale structure of the universe, dwarf galaxies have proven quite vexing. Because the leading model of cosmology has been unable to account for their relative lack of substance. Now scientists writing in the journa

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Scientific American(一)月

60秒科学:Why Dwarf Galaxies Lack Star Power

Why Dwarf Galaxies Lack Star Power In a study in the journal Nature, researchers show that the relative lack of star density in dwarf galaxies need not conflict with standard cosmological models if you include the blast effects of supernovae. Karen H

发表于:2019-01-02 / 阅读(45) / 评论(0)

60秒科学

VOA慢速英语20060826a

IN THE NEWS - Pluto and Dark Matter Both Star in a Busy Week for AstronomersBy Brianna Blake Broadcast: Saturday, August 26, 2006 This is IN THE NEWS in VOA Special English. Pluto compared to other so

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2006年慢速英语（八）月

SSS 2010-12-01

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. To many who stare up at the heavens, the stars may seem simply uncountable. Of course that's not the attitude of astronomers. But they've made a discov

发表于:2019-01-08 / 阅读(58) / 评论(0)

Scientific American(十二)月

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a dash

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accumulated profit tax