A NASA spacecraft has captured the first photo of Mercury taken from orbit. The first of yesterday’s 363 images, shown at left, show the planet’s south pole. The gray surface is covered with craters, including a 53-mile-wide one known as Debussy. Other photos from the $464 million Messenger probe will likely reveal previously-unseen parts of the planet, Space.com reports; it's expected to circle the planet for a year. (More space stories.)