文章列表

• 1.Horizon - Life On Mars 火星生命 - 1
• In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What...
• 2.Horizon - Life On Mars 火星生命 - 2
• I think it is exciting. Because it would imply that if life arose independently on Mars. The implication is that life is pervasive throughout the univ...
• 3.Horizon - Life On Mars 火星生命 - 3
• Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that co...
• 4.Horizon - Life On Mars 火星生命 - 4
• These discoveries raised the stakes. Here was a planet similar to our own. Mars might not have cities or civilizations. But it could be home to other ...
• 5.Horizon - Life On Mars 火星生命 - 5
• William Boynton is professor of planetary sciences at the University of Arizona. And he's dedicated his life to looking for water on Mars. The link be...
• 6.Horizon - Life On Mars 火星生命 - 6
• For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They ...
• 7.Horizon - Life On Mars 火星生命 - 7
• Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is ...
• 8.Horizon - Life On Mars 火星生命 - 8
• But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of...
• 9.Horizon - Life On Mars 火星生命 - 9
• The ground here is permafrost, a mixture of soil and ice frozen together. A group of Russian scientists have teamed up with NASA to drill down into it...
• 10.Horizon - Life On Mars 火星生命 - 10
• But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center...