天文学家已经发现了数以百计的太阳系外行星。但是，现在该给新成员腾让地方了，这颗行星围绕着某颗恒星旋转，用事实证明了传统理论可不完全正确。
开头：Astronomers have already…
结尾：…back then with an update.
Astronomers have already discovered hundreds of exoplanets. But make way for the new kid. Which is orbiting a kind of star that models say it shouldn’t. Researchers found the exoplanet while looking at the star HIP 13044 — or Sergio, for Star of Extra-Galactic Origin. It’s in what once was a separate galaxy, which the Milky Way gobbled up billions of years ago. The scientists saw Sergio wobbling due to the gravitational tug of a Jupiter-sized gas planet, which the scientists dubbed Sergio Junior. They detail their find in the journal Science. You don’t ordinarily find planets hanging around a star like Sergio. First, it's really old — past the Red Giant phase, when stars balloon in size and swallow up planets in close orbits. And planets tend to form around metal-rich stars, like our Sun. But Sergio has only one percent the metal content of our Sun. That doesn't jibe with one widely accepted model of planetary formation. The Sergios may offer a glimpse of the future of our own planetary system — in about five billion years. We hope to be back then with an update.
天文学家已发现了数以百计的太阳系外行星。但是，现在该给新成员腾让地方了，这颗行星围绕着某颗恒星旋转，用事实证明了传统理论可不完全正确。 研究人员是在研究HIP 13044恒星的时候发现了这颗太阳系外行星。恒星HIP 13044 又名Sergio（塞尔吉奥），取“在银河系外起源的恒星”之意。它在曾经是一个独立的星系，在几十亿年前被银河系吞并了。 科学家们观察到Sergio（塞尔吉奥）由于受到一个木星大小的气态行星造成的引力而变得不稳定，科学家将这颗气态行星戏称为Sergio（塞尔吉奥）二世。他们在《科学》杂志上详细叙述了自己的发现。 通常，你不会在如Sergio（塞尔吉奥）这样的恒星周围发现行星。首先，它非常非常老了——它经历过红巨星阶段，这一阶段的恒星会急剧膨胀，吞噬在临近轨道运行的行星。而行星往往会在富含金属的恒星——好似我们的太阳这种恒星——周围形成。可Sergio（塞尔吉奥）的金属含量只有太阳的百分之一。这种情况跟一个被广泛接受的行星形成模型并不一致。 Sergios（塞尔吉奥）或许可以让我们一窥自己的行星系统——大约50亿年后的未来。到那时候，我们希望还能回来再更新节目给大家。