COMAC's CE-25A Electric Commercial Aircraft Completes Its First Crewed Flight
COMAC's 19-seat CE-25A electric aircraft flew with two pilots and a flight test engineer aboard for the first time, covering 60.4 km in 16 minutes 38 seconds.
美国宇航局的“毅力号”证实了火星古老岩石中隐藏着一种生命的关键成分NASA’s Perseverance confirms a key ingredient for life hidden in ancient Mars rocks
美国宇航局的“毅力号”火星车已确认在古老火星岩石的表层下方存在复杂的有机碳，这引发了人们对这颗红色星球可能曾孕育过生命的饶有兴趣的疑问。NASA's Perseverance rover has confirmed complex organic carbon just beneath the surface of ancient Martian rocks, raising intriguing questions about the Red Planet's potential to have supported life. The remarkable prese
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