He looked out the window at the brighter light of morning, at the pale blue sky. Somewhere in the sky was Anthea. A cold place, dying, but one for which he could be homesick; a place where there were people whom he loved, people whom he would not see again for a very long time... But he would see them again.

Walter Tevis, The Man Who Fell to Earth, 1963

The stars were thinning out; the glare of the Milky Way was dimming into a pale ghost of the glory he had known—and, when he was ready, would know again. He was back, precisely where he wished to be, in the space that men called real.

Arthur C. Clarke, 2001: A Space Odyssey, 1968