近日,美国宇航局的过境系外行星测量卫星发现“超级地球”,距离地球31光年,位于宜居区,与其他行星一起绕恒星运行。科学家称,如果该星球存在稠密大气层,则极可能像地球一样表面可留存液态水,具有类似地球的宜居条件。 After completing its first year of observations in the southern sky, NASA's Transiting Exoplanet Survey Satellite has spotted some intriguing new exoplanets only 31 light-years away from Earth. 美国宇航局的过境系外行星测量卫星(TESS)在完成对南半球天空的第一年观测后,发现了几颗距离地球仅31光年的有趣的新系外行星。 exoplanet[,eksəʊ'plænɪt]:n.系外行星 Multiple exoplanets -- planets orbiting stars outside our solar system -- were discovered orbiting an M-dwarf star, called GJ 357 in the Hydra constellation. The star is 40% cooler than our sun and only about a third of the sun's mass and size. A study describing the three planets was published this week in the journal Astronomy & Astrophysics. 科学家发现了数颗围绕着长蛇座M矮星GJ 357运行的系外行星,系外行星指的是围绕太阳系外恒星运行的行星。这颗恒星的温度比太阳低40%,质量和体积只有太阳的三分之一左右。一项描述这三颗行星的研究本周发表在《天文学与天体物理学》期刊上。 constellation [,kɒnstə'leɪʃ(ə)n]:n.星座;星群 |