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SSS 2011-04-22

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab

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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US Space Agency Expands Search for Distant Planets Able to Support Life The search for worlds orbiting distant stars will intensify in the coming weeks when the American space agency NASA launches a spacecraft. Scientists hope the spacecraft will enl

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

SSS 2009-01-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If we want to learn more about our planet and other planets in the universe, we can get some help from stars that are long dead and gone. Thats what U.

SSS 2011-07-13

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? You could think of it as the real dancing with the stars. Two white dwarf stars have been found twirling around each other to make a complete orbit in less than every 13

英语演讲稿范文--我重树信心

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One of the puzzles about our galaxy is that we know that it's had stars forming continuously for about the last ten billion years. But at the rate/ it's eating up its gas now, it's forming new stars, it should burn out that gas soon, should run out o

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The enigma of the white dwarf has been resolved. Scientists have discovered how the vast majority of the stars, including our own sun, would end their days, as the white dwarfs gently fading into the darkness of the universe. But not all stars go so

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