Space-probe photographs indicate the existence of giant volcanoes on the Martian surface.

太空探测照片显示火星表面存在巨大的火山。

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In 2005, the Huygens probe landed on Titan and gave humanity its first view of its unusual surface.

2005年，惠更斯号探测器着陆土卫六，使人类第一次看到了其不寻常的表面。

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Atomic force microscopy generates very high-resolution images (about 5-nanometer resolution) by “feeling” the surface of a sample with a tiny probe tip.

原子力显微镜是运用一种微小的探针去“感受”样本表面，能得到高分辨率的影像（约5纳米的分辨率）。

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These include sending an unmanned rover to the lunar surface as well as sending a probe to collect surface samples and return them to earth.

ECONOMIST: China launches a rocket and aims for the moon

In the months ahead, scientists expect to probe beneath the planet's surface crust for evidence of chemistry favorable to microbial life, using the robot rover's unique high-speed drill.

WSJ: NASA's Curiosity Rover Lands on Mars

He argues that radar astronomy, which is used to probe things like asteroids and the surface of Venus, already gives off signals that could be picked up by aliens.

ECONOMIST: An argument over whether to send messages to aliens