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NASA科学家:若火星真有液态水将适合人类居住
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Topic: NASA科学家:若火星真有液态水将适合人类居住 (Read 291 times)
hdd3go
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NASA科学家:若火星真有液态水将适合人类居住
September 28, 2015, 04:39:04 AM
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据香港《文汇报》9月28日报道,美国太空总署(NASA)将于美国东部时间28日上午11时30分(北京时间28日晚11时30分)举行名为“解开火星之谜”的特别记者会,公布“重要科学发现”。该消息随即引起种种揣测,有人猜想火星探测器“好奇号”可能已找到生物,甚至是传说中的“火星人”,不过科学 家普遍认为,记者会上最有可能是公布在火星上发现的液态水。
新闻配图(图片来自互联网)
NASA一名科学家表示,假如火星上真的有水,那么那里便可能存在生命,也将适合人类移居。
上一次NASA召开紧急记者会是在7月份,当时公布在距离地球1400光年的天鹅座,发现较地球稍大的“兄弟星球”——开普勒452b。NASA今日将安排行星科学主任格林、火星探测计划首席科学家迈尔及亚利桑那大学行星地理学教授麦克尤恩等科学家出席记者会,不仅通过官网和电视台直播,还会在微博和twitter上响应附有“#AskNASA”标签的问题,解答公众疑问。
网民对记者会内容揣测颇多,有人坦言希望找到外星人,不过也有人打趣道:“以为有外星人,结果只是块石头”。美国有线新闻网络(CNN)认为,记者会报告发现外星人的机会不大,专家则从出席的科学家名单入手,推测今次NASA可能会发布火星地表下存在液态水的情况。NASA火星任务前主任麦奎斯申表示,假如NASA真的在火星地表下不远处,发现可流动及容易取得的水源,当地便可能存在生命,也适合人类移居。
Explore Mars公司执行董事卡伯里认为记者会将发表与液态水有关的事实,科学家过去一直估计火星的峭壁或有水流出,若今次发现季节性的径流,将会极具戏剧性,因为假如有液态水存在,火星便可能曾出现生命,甚至依然有生物存活。另一方面,人类探索火星时也可减少携带食水,腾出更多重量运载其他物品。
据报道,NASA此前曾称火星“曾经适宜”生物居住,假如作进一步探测,或有机会找到生命或残骸。此外,NASA也计划到2030年实现载人上火星的任务。
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NASA科学家:若火星真有液态水将适合人类居住
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