the reason that some images are blurry and some aren't is because the images are taken from statelites from private companies. Those private companies sell the images to the government and then the government publishes them. The government has almost every place but they only request images in areas they want. For instance the White House is going to have a much better/updated picture then hicksville out in the middle of Alabama. Some of them will even be in Black and White. Also, it's hard to take these pictures. There has to be almost NO CLOUDS in the sky.