国际空间站的星轨
Stars leave streaks of light in concentric circles in this March 16, 2012, view from the International Space Station. To create this composite long exposure, NASA astronaut Don Pettit combined multiple 30-second exposures from a mounted camera on the space station into one image.
The orbiting laboratory travels 5 miles per second, traveling around our planet every 90 minutes.
Image Credit: NASA/Don Pettit
2012年3月16日,从国际空间站拍摄的照片中,恒星在同心圆上留下一道道光。为了制作这张合成的长时间曝光照片,NASA宇航员唐·佩蒂特将空间站上安装的相机拍摄的多张30秒曝光照片合成了一张照片。
轨道实验室每秒飞行5英里,每90分钟绕地球一周。
影像来源:NASA/Don Pettit