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NASA halts alien biosignature probe as troubling evidence races ahead

The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and ...

Deep sea mining could pose wildlife risk 深海采矿可能威胁野生动物生存

Nasa's Sun skimming mission 美国国家航空航天局启动太阳探测计划 Episode 170602 / 02 Jun 2017 Will the daring mission unravel some of the mysteries about the Sun? 'Car boot sale' diamond set to fetch £350,000 at auction ...