2021考研英语阅读材料：惊现“三体”行星”

The planet was discovered by TESS, NASA's planet-hunting space telescope designed to findexoplanets that pass between us and their home star, by detecting the telltale dimming as theplanet blocks a small percentage of the star's light.

这颗行星是由美国航空航天局的行星猎手太空望远镜TESS发现的。TESS的使命是过检测行星阻隔恒星一小部分光线时指示性的变暗来寻找系外行星。这些行星经过地球和他们的主恒星之间。

The depth of dimming, and the tiny movements of the star as it is very slightly pulled by theplanet's gravity (detected with other telescopes), allow scientists to place constraints on thesize and mass of the planet.

科学家过变暗的程度以及恒星被行星重力牵引时微小的运动(由其他望远镜探测)得出行星大小和质量的范围。

LTT 1445Ab is very different from the 2016 discovery of HD 131399Ab, another exoplanet withthree suns.

LTT1445Ab与2016年发现的另一个有“三个太阳”的系外行星HD 131399Ab差别很大。

The latter is a giant with a 550-year orbit around one of the stars in a triple system 340 light-years away.

后者十分巨大，距离地球约340光年，每550年绕三星系统中的一颗恒星旋转一圈。