图片新闻【317】6万年来离地球最近的火星

Mars is seen in the night sky over the coastline at Corona del Mar state beach in Newport Beach, Calif., Monday morning, Aug. 25, 2003, at 5:00am PT. The red planet and earth reach their closest encounter in nearly 60,000 years when Mars is 55.6 million kilometers away.(AP Photo/Wally Pacholka, AstroPics.com)

词汇：

Mars n.火星

coastline n.海岸线

beach n.海滩

PT=Pacific Time 太平洋时间

encounter n.遭遇