BBC UKChina Six New Planets 科学家发现6颗行星
[audio]http://language.chinadaily.com.cn/bbc/media_english/assets_8826032/me_123_exoplanets_audio_110203_me_123_exoplanets_audio_au_bb.mp3[/audio][font=Verdana, 宋体, helvetica, arial, sans-serif][p=30, 2, left]Background:科学家近日通过“开普勒”太空望远镜观测到一个距离地球2000光年的奇特行星系统。其恒星与太阳相似，并有6颗行星围绕它运行。[/p][/font][color=#333333][font=Verdana, 宋体, helvetica, arial, sans-serif][size=13px]Five of the six planets are [b]crammed[/b] tightly in around the Kepler-11 star, with [b]orbits[/b] of between just ten and 47 days. That means they're all super hot, but the data suggests they're also made mostly of gas.[/size][/font][/color][font=Verdana, 宋体, helvetica, arial, sans-serif][p=30, 2, left]Finding six new planets around a single star represents an[b]impressive [/b][b]haul.[/b] Nasa is calling it the best find since the first[b]so-called [/b][b]‘exoplanet’ [/b]was discovered 16 years ago. It might not be the most populated solar system yet found - six or possibly seven planets have been found in a rival system, but it's the nature of this new discovery which is getting the astronomers [b]scratching their heads[/b] in wonder.[/p][p=30, 2, left]That's strange, because small hot planets this close in should have been [b]ripped asunder[/b] by their parent star in their [b]formative years[/b], say the scientists. One possible explanation is that the planets started out bigger and further out and were slowly [b]dragged [/b]into tighter orbits, as part of a [b]contracting[/b] belt of dust and [b]asteroids[/b].[/p][/font] haul n 一网的捕获量
head-scratching adj 困惑的
asunder adv <文>分开地；分离地
contracting adj 收缩的,缩成的,缩小的
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