An unmanned NASA mission to search the sky for Earth-like planets for the potential to host life has launched from Cape Canaveral in Florida.

• 美国宇航局在佛罗里达州卡纳维拉尔角将一艘无人驾驶的宇宙飞船发射升空，该飞船用以探测是否存在有生命迹象的类地行星。