ALT A close-up photo of the Moon, which is about three-quarters full; its left side is in shadow. Its gray seas and circular impact craters are clearly visible. Near the center of the image, the International Space Station can just barely be seen passing in front of the Moon. Credit: NASA/Joel Kowsky

ALT A reddish Moon, with clouds passing in front of it, floats above a quickly-moving subway train at night. Credit: NASA/Bill Ingalls

ALT A large, golden Moon, partially shrouded by light clouds, hangs above the peak of the Washington Monument, which is covered in scaffolding. Credit: NASA/Bill Ingalls