TAILIEUCHUNG - The Sky at Night Phần 6

Bụi tích tụ trên tấm trên của họ bị đe dọa cắt đứt tất cả các truyền, nhưng ở nick gió thời gian thuận tiện thổi bụi đi. Cả hai cỗ máy đã bị chụp ảnh từ quỹ đạo, và cả hai đều có đi qua lãnh thổ hấp dẫn và đa dạng. | 20 Exploring Mars 79 drift and extricated itself only with difficulty. But Mars has been helpful too. Dust accumulating upon their upper panels threatened to cut off all transmissions but in the nick of time convenient winds blew the dust away. Both rovers have been photographed from orbit and both have traversed fascinating and varied territory. One of the most spectacular features is Victoria Crater visited by Opportunity with its bays and inlets while Spirit scaled the Columbia Hills inside Gusev Crater probably an ancient lake. Everywhere there is evidence of past water activity - and of course past eruptions. The giant volcanoes of Tharsis must indeed have been awesome and we cannot be sure that they are now extinct. They may merely be dormant. There was also the Face on Mars originally imaged by the Viking orbiters of the 1970s. One has to admit that it did look like a face - and predictably caused great excitement among flying saucer enthusiasts. Perhaps disappointingly new images taken from different angles show that it is a very ordinary rock structure. There is nothing in the least unusual about it. Plans for returning to Mars are well advanced both by NASA and by the European Space Agency. The search for life will continue and talk of a fully fledged Martian Base can no longer be dismissed as science fiction. When this will be possible depends partly upon progress in technology and partly upon politics. Of one thing I am certain the world of 2080 will not be the same as that of 2008. Either we will be preparing to set up bases on Mars or else the remnants of Homo sapiens will be trying desperately to survive in radioactive caves. I have always felt that the first travellers to Mars will not go straight there but will stop-off first at Deimos which is after all a natural space-station and might have been put there especially for our benefit. I would favour Deimos rather than Phobos mainly because it is further out whirls along at a less giddy speed and .

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