1971 - Mars probe program: Mars 2 is launched by the Soviet Union.

1971年的今天，火星太空探测船计划：苏联发射了火星2号。

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This color image was assembled from a series of exposures taken within 36 hours of the Mars closest approach with Hubble's Wide Field and Planetary Camera 2.

这一彩色图像是通过哈勃太空望远镜和行星照相机2在36小时内采集的最接近火星的一系列图片中组合出来的。

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Shortly after Viking 1 landed on Mars on July 20, 1976, its Camera 2 captured the first photograph ever taken of the planet's surface.

1976年7月20日，海盗- 1号抵达火星不久，其2 -摄像机就抓拍到有史以来第一张火星全景图。

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So far the score in 1999 is Mars 2 Earth 0.

BBC: Mars 2 - Earth 0

The rover, after traveling for more than eight months, safely landed on the surface of Mars before 2 a.m.

CNN: Mars rover mission's 'Mohawk Guy' inspires Obama

Mars was bombarded with approximately 2.6 million of these pulses.

BBC: By BBC News Online Science Editor Dr David Whitehouse