ALT Astronaut Buzz Aldrin, wearing his spacesuit, descends the ladder of the Apollo 11 Lunar Module, a large structure with golden foil covering its lower half. The Moon's surface is bright and flat; above the horizon, which slopes downward from right-to-left, the sky is completely black. Credit: NASA

ALT A full disk image of Earth, as seen from the Orion capsule. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. From about 8 to 9 o'clock, a large brown landmass is Africa, with the Iberian peninsula twinkling with lights just where the planet curves. At the 1 o'clock spot, aurora glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space. Credit: NASA/Reid Weisman