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美国航天局（NASA）发布了从土星拍到的地球照片 边上还有月球 距离是距地球 900 000 000 公里。     Last Friday, NASA’s Cassini spacecraft took a photo of Earth from 900 million miles away as it was orbiting Saturn. The Earth images are part of a larger mosaic that will show the full Saturn system once its stitched together by the Cassini team over the next few weeks. In the meantime, the spacecraft has already beamed back to Earth tons of raw images from the event that are available to view and download on NASA’s website. The raw images do not have the colour, brightness, or sharpness of the finished product, but are being manipulated by amateur image processors while we wait for the official version to be assembled. Val Klavans, who holds a degree in astronomy and previously interned at NASA’s Goddard Space Flight centre with the Cassini mission, created the colour composite of Saturn and Earth seen above from three raw images taken by the Cassini spacecraft. Earth is the white dot in the distance, with Saturn’s rings in the foreground. |
