科学家们发现一个“超地球”的外行星 能够支撑生命,但其轨道却引人怀疑。 Scientists find a "super-Earth" exoplanet that could support life, but its orbit raises doubts.

科学家发现了一种可能维持生命的“超地球”外行星,HD 20794 d,是地球体积的六倍,在20光年之外绕着一颗太阳般的恒星运行。 Scientists have discovered a potentially life-sustaining "super-Earth" exoplanet, HD 20794 d, six times Earth's size, orbiting a Sun-like star 20 light years away. 虽然它的位置允许可能的水,但它的椭圆轨道使得它不确定这个星球能否维系生命。 While its position allows for possible water, its elliptical orbit makes it uncertain if the planet can support life. 利用智利的La Silla天文台提供的数据发现,地球是未来飞行任务寻找太阳系以外生命迹象的一个关键测试案例。 Discovered using data from the La Silla Observatory in Chile, the planet is a key test case for future missions seeking signs of life beyond our solar system.