Second, Jupiter's enormous mass prevents most Sun-bound comets from penetrating the inner solar system.

其次，木星的巨大质量阻止了大多数与太阳结合的彗星穿透太阳系内部。

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After reaching about half of the Earth-Sun distance from the Sun, the comet should fade rapidly as it then heads out of the inner Solar System.

到达距太阳半个日地距离之后，彗星会因朝着内太阳系之外急速前进而快速变暗。

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The planet Mercury is the smallest of the inner planets (4, 880 km/3, 032 mi in diameter), and the closest to the Sun (58 million km/36 million mi - or 3.2 light minutes).

水星在地内行星中是最小的行星（直径4 880 公里），同时也是靠太阳最近的行星（5800万公里）。

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The discovery that the inner Sun spins at different rates at different latitudes is consistent with earlier studies showing that the surface of the Sun also rotates at different speeds.

BBC: Sun has strange 'spin cycle'

"It's hard to be sure, " he said, because the detailed inner workings of the Sun were a mystery.

BBC: Sun, Trace

Early of the Lawrence Livermore National Laboratory, California, proposed siting a vast, 2000 km-wide glass deflecting panel at the "inner Lagrange point" between the Earth and the sun, the latter diverting the sun's rays away from the Earth's atmosphere.

CNN: The shield of Ra: Could solar reflection save the planet?