诸多线索综合起来为我们描绘出一幅画面:那是火星遥远的过去,那时的火星还有着一层厚厚的大气层,令这颗星球温热暖和,从而使水能够在火星表面流淌。但如今,地表的水消失不见,而

发表于:2018-12-07 / 阅读(112) / 评论(0) 分类 60秒科学

The Mars Rover Spirit has long surpassed its planned three-month mission, and appears to be virtually powerless. Researchers still hope that once the Martian days lengthen, the rover's batteries may charge up to the point where communication again be

发表于:2019-01-02 / 阅读(135) / 评论(0) 分类 60秒科学

NASA Mars Rover Will Face Harrowing Descent, Landing Curiosity is the centerpiece of the $2.5 billion Mars Science Laboratory spacecraft, launched in November aboard an Atlas V rocket. It's traveled some 560 million kilometers toward its destination,

发表于:2019-01-13 / 阅读(82) / 评论(0) 分类 VOA标准英语2012年(八月)

In New Novel, 'Martian' Author Andy Weir Builds A Colony On The Moon SCOTT SIMON, HOST: Life on the moon is no bed of roses. The coffee's weak because water boils at low temperature. The food is rank because it's hard and expensive to grow much more

发表于:2019-01-16 / 阅读(91) / 评论(0) 分类 2017年NPR美国国家公共电台11月

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

发表于:2019-01-26 / 阅读(81) / 评论(0) 分类 自然百科2012年

If we are looking for Martian bugs, we should search for life forms at least as tough and alien as this. Im looking at Mars in a point of view of a microbe. And as a microbe, I really need very, very tiny amount of water. I could probably live my ent

发表于:2019-02-03 / 阅读(73) / 评论(0) 分类 自然百科2012年

It was 119 Fahrenheit here yesterday; really, really, really hot day on Mars ever get up to about 30 Fahrenheit and at night it goes to more than 100 below. Martian deserts are both frozen and sun baked. With no Ozone layer, UV levels are so high tha

发表于:2019-02-03 / 阅读(81) / 评论(0) 分类 自然百科2012年

By Paul Sisco Washington, DC 02 August 2006 watch Viking report An illustration of a Viking landing on the red planet Thirty years after the first successful landing of a robotic probe on Mars by NASA's Viking spacecraft, the search for life on the

发表于:2019-02-03 / 阅读(138) / 评论(0) 分类 2006年VOA标准英语(八月)