After Apollo 17 in December 1972, humans never went beyond Earth orbit again. Now NASA’s Artemis program aims to restart deep-space crewed exploration returning to the Moon, landing the first woman ...
A scientist argued that a Viking lander experiment in 1976 detected microbial life on Mars and urged NASA to repeat the tests ...
一种彩虹色的狼蛛、一种毒蛇和一种手指呈钩状的毛茸茸的长臂猿之间有什么联系?它们都被列入了一份高度濒危物种的名单中,一英国慈善组织表示将于今年优先救助这份名单上的动物。