Look low in the east shortly after sunset for a blue-gray band atop the horizon with a thin layer of pink above it, fading into the blue of the daytime sky. The dark band is Earth’s own shadow, which extends far into space.
Look low in the east shortly after sunset for a blue-gray band atop the horizon with a thin layer of pink above it, fading into the blue of the daytime sky. The dark band is Earth’s own shadow, which extends far into space.