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  • 英语听力:自然百科 行星旅行指南:火星 Mars—6

    Steve Squyres Martian odyssey has taken him from pole to pole, visiting those places on earth that share at least some of the same characteristics. They are extremely dry, extremely cold or extremely dead. Death Valley is one of his favorites. This i...

  • 英语听力:自然百科 行星旅行指南:火星 Mars—5

    In the four decades since our robots first arrived, the once fuzzy ball at the end of our telescopes has steadily focused into a red planet we can understand, and it is not a welcoming place. The problem is the atmosphere is so thin and cold that wat...

  • 英语听力:自然百科 行星旅行指南:火星 Mars—4

    Therere some basic things you should know about Mars before leaving home. Most days will be clear, and sunny and cold. The average temperature on Mars is as bitter as midwinter in Antarctica. And about half the diameter of the earth, Mars is a handy...

  • 英语听力:自然百科 行星旅行指南:火星 Mars—3

    Could life have been forged in the same way on both planets? When we sent the first probe to investigate in the 1960s, almost anything was possible. Originally in the popular imagination we thought that Mars might be inhabited by whole civilizations,...

  • 英语听力:自然百科 行星旅行指南:火星 Mars—2

    Its been said that the first person on Mars is alive somewhere on earth today. Imagine its you. What do you need to know? How much you get there? What should you pack? What are some of the must-see sights and what should you avoid? Think of this as y...

  • 英语听力:自然百科 行星旅行指南:火星 Mars—1

    Have you ever fantasized about going somewhere special? Somewhere far from crowds, off the beaten track. Somewhere out of this world? Is it time to catch a rocket to the Red Planet? Mars is filled with mysteries, Volcanoes 75,000 feet tall, huge cany...

  • 经济学人45:"迷你"漫游车如何登陆火星

    Science and Technolgy 科技 Mars exploration 火星探测 How to land a Mini on Mars 迷你漫游车如何登陆火星 The biggest and fanciest Mars rover so far will soon blast off from Florida 迄今为止最大和最新奇的火星探测器即将于...

  • 国家地理-2008-04-06 Mission to Mars 火星任务:巨大的心理考验

    Cramped quarters, no privacy, and the stress of working together every day. Psychology, more than aerospace engineering, may be the key to sending human crews to Mars. This is Mars on Earth, a station that was built to help us learn how to live on t...

  • 国家地理:Is It Real? Life on Mars 火星生命

    Believe it or not, astrobiologist Penny Boston is searching for life on Mars by dropping deep into this heart of darkness. This is a lava tube, a subterranean cave formed by underground lava flows during volcanic eruptions that occurred thousands of...

  • 观测火星的最佳时机

    39 观测火星的最佳时机 DATE=6-20-01 TITLE=SCIENCE REPORT - Observing Mars BYLINE=Mario Ritter (Start at 59" )This is the Bill White with VOA Special English Science Report. Scientists say...

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