NASA發現火星有水！

科學家在探索人類是否有辦法移居火星時，最大的質疑是火星有否足夠的水和氧氣以供應人類生存。原來火星上真的有水啊，而且還是流動的液態水。美國太空總署（NASA）日前宣布火星上某些岩石斜坡留有暗黑色的流水痕迹，證實火星在夏天曾有液態的鹽水出現。這次新發現讓科學家為之振奮，大大提高了火星上有生物存在的可能性，也被視為人類可能移居火星的重要研究發現。

kē xué jiā zài tàn suǒ rén lèi shì fǒu yǒu bàn fǎ yí jū huǒ xīng shí，zuì dà de zhì yí shì huǒ xīng yǒu fǒu zú gòu de shuǐ hé yǎng qì yǐ gōng yìng rén lèi shēng cún。yuán lái huǒ xīng shàng zhēn de yǒu shuǐ a，ér qiě hái shì liú dòng de yè tài shuǐ。měi guó tài kōng zǒng shǔ rì qián xuān bù huǒ xīng shàng mǒu xiē yán shí xié pō liú yǒu àn hēi sè de liú shuǐ hén jì，zhèng shí huǒ xīng zài xià tiān céng yǒu yè tài de yán shuǐ chū xiàn。zhè cì xīn fā xiàn ràng kē xué jiā wèi zhī zhèn fèn，dà dà tí gāo le huǒ xīng shàng yǒu shēng wù cún zài de kě néng xìng，yě bèi shì wéi rén lèi kě néng yí jū huǒ xīng de zhòng yào yán jiū fā xiàn。

In the past decades, Scientists have been investigating if Mars is a suitable place for humans to live. To answer this question, the key is to find out if there is sufficient oxygen and water to support mankind’s existence. And the breaking news is that flowing water has been discovered on Mars! The National Aeronautics and Space Administration (NASA) has announced that traces of dark, black water has been found on some rocky slopes – proof that there is liquidized salty water in the summer time on Mars. The scientists are excited about the new discovery because the chances of being able to live on Mars has increased. Also, it is an important index to show Mars is a suitable place for mankind to migrate to.

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文：梅子