pointed outward,away from the Earth,and WISE will snap a picture of a different part of the sky
每11分钟WISE就会抓拍天空一个不同的部分。六个月之后,它将把整个天空
every 11 minutes. After six months it will have taken pictures across the entire sky.
拍摄完毕。
The pictures taken by WISE wont be like everyday digital photographs,however. WISE
然而,WISE拍摄的相片不会像我们日常的数码相片。WISE是Wide-field
stands forWide-field Infrared Survey Explorer.As its name suggests,the WISE camera takes
Infrared Survey Explorer的缩写。正如名字所示,WISE能
pictures of features that give off infrared radiation6.
Radiation is energy that travels as a wave. Visible light, including the familiar spectrum of
辐射是波浪状行进的一种能量。人能看到的光,包括大家熟悉的、在彩虹里
light7 that becomes visible in a rainbow,is an example of radiation. When an ordinary digital
看到的光谱就是射线的一个例子。当普通的数码相机给一棵树照相时,它能接收
camera takes a picture of a tree,for example,it receives the waves of visible light that are reflected off
到树反射回来的、可见的光波。
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