原文已被隐藏，你可用 快捷键 - 或点击 显示原文 按钮来查看原文
第1段
1 .This is Scientific American's 60-Second Space. I'm John Matson. Got a minute?
该句暂无译文！
2 .In planet formation, as in adolescence, you've got your late bloomers.
该句暂无译文！
3 .Such is the case for a nearby star called TW Hydrae.
该句暂无译文！
4 .At some three million to 10 million years of age, it's relatively old for a young star.
该句暂无译文！
5 .That is, TW Hydrae formed much more recently than our sun but is past the point at which most fledgling stars are still encircled by a massive disk of dust and gas--the stuff of planet formation.
该句暂无译文！
6 .But a new analysis shows that TW Hydrae retains a surprisingly hefty circumstellar disk, implying that the star could still be forming giant planets.
该句暂无译文！
7 .The study appears in the journal Nature.
该句暂无译文！
8 .Researchers from the U.S., Germany and the Netherlands pointed the European Space Agency's orbiting Herschel Space Observatory at TW Hydrae to investigate the star's disk.
该句暂无译文！
9 .They detected levels of a heavy hydrogen molecule called hydrogen deuteride.
该句暂无译文！
10 .From that measurement they were able to estimate the abundance of ordinary hydrogen, which makes up the bulk of the disk.
该句暂无译文！
11 .The result: TW Hydrae still has enough raw material left to make 60 Jupiters or so, despite its maturity.
该句暂无译文！
12 .For aging stars, then, perhaps 10 million is the new 30.
该句暂无译文！
13 .Thanks for the minute, for Scientific American's 60-Second Space. I'm John Matson.
该句暂无译文！