单词:
单词: 相关文章
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
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
AMERICAN MOSAIC - In a Galaxy Far, Far Away, 'Star Wars' Comes to an End By Nancy Steinbach and Caty Weaver Broadcast: Friday, May 27, 2005 (MUSIC) HOST: Welcome to AMERICAN MOSAIC, in VOA Special Eng
This is Scientific Americans 60-Second Science. I'm Steve Mirsky. Got a minute? Astronomers have discovered a star thats running away from home. The star is speeding away at a blistering 2.6 million kilometers an hour, apparently after being cast out
HARI SREENIVASAN: It's an eventful day and a humbling one for the electronic giant Samsung, the world's largest maker of smartphones. Today, the company announced that it is halting production of its beleaguered Galaxy Note 7 phone. Reports of the No
An increasingly popular business model lets participating companies give to charity while making a profit. But the approach is blurring the lines between for-profit and not-for-profit organizations and raising questions about the real drivers behind