After several years of painstaking research and debate, NASA scientists whittled down their initial list of over 50 sites to four - Eberswalde Crater, Holden Crater, Mawrth Vallis, and Gale Crater.

在经过好几年的刻苦研究和讨论以后，NASA的科学家已经将他们一开始的50多个登陆点削减到了4个，它们分别是：埃伯斯·沃德环形山、霍尔登环形山、马沃斯山谷以及盖尔环形山。

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After several years of painstaking research and debate, NASA scientists whittled down their initial list of over 50 sites to four — Eberswalde Crater, Holden Crater, Mawrth Vallis, and Gale Crater.

在经过好几年的刻苦研究和讨论以后，NASA的科学家已经将他们一开始的50多个登陆点削减到了4个，它们分别是：埃伯斯·沃德环形山、霍尔登环形山、马沃斯山谷以及盖尔环形山。

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Golombek revealed that the Pathfinder lander bounced more than 16 times on its cushion of air bags before coming to rest in the area called Ares Vallis.

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Prof Vallis said "it is attracted to DNA damage", where it then delivers a dose of radiation, causing more damage and attracting even more antibodies - it is a "self-amplifying system".

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Prof Katherine Vallis said lumps could be felt when the mice were about 120 days old, but "we detected changes prior to that at 90 to 100 days - before a tumour is clinically apparent".

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