下面的雅思阅读材料的主要内容是横行的诞生。恒星的生老病死对于研究宇宙的历史和现状以及预计宇宙的将来都是很大的帮助,新近发现的一颗刚刚诞生的恒星会给我们提供哪些帮助呢?
SEATTLE, WASHINGTONStudying newborns and toddlers reveals a lot about the first stages of human life, but to learn about conception and birth, you need to focus on a mothers womb. The same is true for stars. Astronomers know a lot about the first stages of a stars life, but its conception and birth are still shrouded in mystery. Quite literally, actually: Stars are born in the cores of dark, dense, cold clouds of dust.
Now, the European Planck satellite has revealed more than 10,000 of these extremely cold stellar wombs. Surprisingly, many of them turn out to be larger than astronomers had expected. Its hard to understand how such large concentrations of gas can stay this cold, says Planck team member and astrophysicist George Helou, director of the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena.
The Cold Core Catalogue of Planck Objects was presented here today at the 217th meeting of the American Astronomical Society as part of the release of the first scientific results from the Planck mission. Other Planck results released today are related to remote galaxy clusters, dusty galaxies in which large numbers of new stars are born, and extremely rapidly spinning dust particles in our own Milky Way.
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2016-02-26
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