Two more shots that show Colorado's Rocky Mountains inside the canyon.

这是科罗拉多落基山脉峡谷里的两张照片。

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Subtle differences in Titan's pull on Cassini suggest that the materials inside the moon are a mix of ice and rock with no clearly defined rocky layers.

泰坦星对卡西尼号牵引力的细微变化表明，该星球内部为冰和岩石的混合物，且没有明晰的岩石分界线。

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Finding rocky material means the stars once had the raw ingredients to make exoplanets-although almost no known planets orbit stars inside of clusters.

岩石物质的发现意味着恒星内有制造行星的原材料——尽管几乎没有已知的行星围绕星团里的恒星转动。

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After a 100-yard ride, he judiciously pulled up, over and out of the wave as it approached the point's rocky inside.

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America and its allies have backed many of these groups since the 1991 Gulf war, but their fractiousness, combined with discord inside American administrations, has made for rocky relations.

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The simulations also showed that rocky planets known as Hot Earths often form inside the orbits of Hot Jupiters.

BBC: NEWS | Science/Nature | Earth-like planets may be common