The exoplanet is a few times the mass of Earth, but it should still be small enough to be rocky rather than a gas giant like Jupiter.

这个系外行星的质量是地球的几倍，但是它足够小，能够由岩石构成，而不是像木星是一团巨大的气体。

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Though the researchers have no direct proof that the new planet is rocky, its mass means it is not a giant gas planet like Jupiter, they said.

尽管目前研究人员还没有直接证据证明这是一颗岩状行星，但是他们宣称，这颗行星的质量表明，它并不是一颗类似木星的巨大气体行星。

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Yet a rocky world named Kepler 10b is being described by astronomers as one of the greatest discoveries in history – a ‘missing link’ between Earth and the giant planets made of gas.

一个命名为开普勒10的岩石星球被天文学家描述为历史上最伟大的发现之一—地球与巨大星球关于气体缺失了链接。

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On Monday, they were home with their grateful mother, and Shaw and Rocky were being honored at the fire station -- Shaw with a fireman's hat and Rocky with a giant rawhide bone he grabbed from Fire Chief Ken Block before Block could take off its plastic wrapper.

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On September 26th the group announced, in a paper posted to arXiv, an online database, that its participants had discovered two probable exoplanets, one a Jupiter-like gas giant, and the other, possibly, a smaller, rocky world about twice the diameter of Earth.

ECONOMIST: Amateur astronomers join the ranks of the planet hunters