["http://images-assets.nasa.gov/image/PIA13517/PIA13517~orig.jpg", "http://images-assets.nasa.gov/image/PIA13517/PIA13517~small.jpg", "http://images-assets.nasa.gov/image/PIA13517/PIA13517~thumb.jpg", "http://images-assets.nasa.gov/image/PIA13517/metadata.json"]