Scientists in the United States say they've discovered a new kind of potentially life-bearing rocky planet in a distant star system known as Kepler 10C. __________________________________Astronomers say they were surprised that this heavy, much denser planet had managed to remain solid without losing atmosphere and ballooning into a gaseous giant like Jupiter. BBC News. 美国科学家称,他们在遥远星系开普勒10C中发现了一颗新的具有潜在生命迹象的行星._________________________________________天文学家吃惊的是--这颗沉重而又质密的行星竟能保持固体化,且又完好地保留了大气层;除此之外,它也没有像木星那样因为过多地膨胀变成气态行星.
