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Astronomers Spy Youngest Planet Yet

机译:天文学家间谍最年轻的星球

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"A thick lump of dust, rocks, and gas" is how astronomer Jane Greaves of the University of St. Andrews in Scotland describes the new protoplanet she reported on in April at a meeting in Belfast sponsored by the Royal Astronomical Society. The dusty, rocky, gaseous lump, circling a star 520 light-years from Earth, is the youngest planet-in-the-making ever found. "Normally when people talk about stars with planets forming, they're often talking about a system that's a billion years old," Greaves says. But she trained her search for forming planets on the baby star HL Tau, which is just 100,000 years old. Using an unusual configuration of radio telescopes to detect particles the size of pebbles. Greaves found a dense clump in the disk of gas and dust surrounding the star. Planets build from such clumps-or so it is believed. Now astronomers can monitor the nascent object designated HL Tau b to find out.
机译:苏格兰圣安德鲁斯大学的天文学家简·格雷夫斯(Jane Greaves)是“厚重的尘土,岩石和气体”,是她在4月由皇家天文学会赞助的贝尔法斯特会议上描述她所报告的新原行星的方式。尘土飞扬,岩石状,气态的团块环绕着距地球520光年的一颗恒星,是有史以来发现的最年轻的行星。 “通常,当人们谈论由行星形成的恒星时,他们经常谈论的是具有十亿年历史的系统,”格里夫斯说。但是她训练了在只有十万年历史的小恒星HL Tau上寻找行星的方法。使用射电望远镜的非常规配置来检测卵石大小的粒子。格雷夫斯在恒星周围的气体和尘埃盘中发现了一个密集的团块。行星是从这样的团块中建立的,或者可以这么认为。现在,天文学家可以监视名为HL Tau b的新生物体进行侦查。

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