A Solar Day on Mercury

mercury_day_oneAfter its first Mercury solar day (176 Earth days) in orbit around the planet closest to the Sun, MESSENGER has nearly completed two of its main global imaging campaigns: a monochrome map at 250 m/pixel and an eight-color, 1 km/pixel color map. There are a few small gaps which will be filled in during the next solar day. The MESSENGER maps provide uniform lighting conditions ideal for assessing Mercury’s surface features as well as the color and compositional variations across the planet. The views seen here were assembled from thousands of individual images. The color image was taken through the wide-angle camera filters at 1000, 750, and 430 nm wavelengths displayed in red, green, and blue, respectively.

Image Credit: NASA

Leave a Reply