关于太空的惊人事实

来源：时代英语(高一), 2019, (04): 9-10.

<正>Sunsets on Mars are blue.火星的晚霞是蓝色的。The Curiosity Mars rover’s first color photograph of a sunset in 2015 revealed a surprising twist—sunsets on Mars are blue.NASA said this is because "dust in the Martian atmosphere has fine particles that permit blue light to penetrate the atmosphere more efficiently than longer-wavelength colors" like yellow, orange, and red.2015年,"好奇号"火星探测器拍下第一张彩色日落照,这让人们惊讶地发现,火星的晚霞是蓝色的。美国宇航局表示,这是由于火星大气层的尘埃颗粒较小,散射蓝光的能力强于长波颜色,如黄色、橙色、红色。