Length of the leveling staff (White) at the upper edge of the Picture: 5 meters. (sciencedaily.com)
At the top edge of the picture are the two large spiral galaxies M88 and M91. (atlasoftheuniverse.com)
For Kindle, gray lines tend to show on one or more edges of the pictures when using Microsoft Word unless the file is saved as web page, filtered. (chrismcmullen.com)