ALT Earth as seen from the Orion capsule. It is divided sharply in half, with a line running diagonally from the 11 o'clock to the 4 o'clock. The lower left half is a bright pale blue. Its surface is covered with swirly, puffy white clouds, with texture indicating different thicknesses. The upper right half is dark, with no illumination from the Sun. Earth is set against the black of space. Credit: NASA/Reid Weisman

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 Wiseman

ALT A full disk image of Earth at night, as seen from the Orion capsule. The planet is a dark midnight blue. Swirling white clouds are visible against the darker surface. From about 8 to 9 o'clock, a large, very brown landmass is Africa, with the Iberian peninsula twinkling with lights just where the planet curves. Other tiny yellow dots of electric lights are sprinkled across the planet's surface. From the 3 to the 6 o'clock spot, a very thin crescent of blue light hugs the edge of the planet. Earth is set against the black of space. Credit: NASA/Reid Wiseman

ALT Earth as seen from the Orion capsule. It is divided sharply in half, with a line running diagonally from the 11 o'clock to the 4 o'clock. The lower left half is a bright pale blue. Its surface is covered with swirly, puffy white clouds, with texture indicating different thicknesses. The upper right half is dark, with no illumination from the Sun. Earth is set against the black of space. Credit: NASA/Reid Wiseman