当地时间2014年4月15日，美国出现罕见“血月”景观。美国国家航空航天局（NASA）宣布，美国时间4月15日出现月全食，月亮呈铜红色，俗称“血月”。这是在接下来两年内连续发生的4次月全食中的第一次，余下的3次将分别与前一次间隔半年。天文学家为这一现象起名为“连环四月食”，即2年内连续有4个月会出现月全食。[CFP]
The moon is halfway through a lunar eclipse over southern California as seen from Korea town, west of downtown Los Angeles early on April 15, 2014. The entire event was to be visible from North and South America, but sky watchers in northern and and eastern Europe, eastern Africa, the Middle East and Central Asia were out of luck, according to NASA. [Photo/CFP]