萨根先生还帮助海盗一号和海盗二号火星探测器选择在火星登陆的地点，这是人类火星探测器第一次成功在火星上着陆。
Mister Sagan helped choose the landing area for Viking One and Viking Two, the first space vehicles to successfully land on Mars.
1976人们对于异星生命的存在感到很悲观。 当年海盗一号飞行器登录火星，用它伸出的机械臂抓起了一掊红色的火星尘土并进行了化学测试。
Things were not looking so good for alien life in 1976, after the Viking I spacecraft landed on Mars, stretched out its robotic arm, and gathered up a fist-size pile of red dirt for chemical testing.
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