The Earth reminded us of a Christmas tree ornament hanging in the blackness of space. As we got farther and farther away it diminished in size. Finally it shrank to the size of a marble, the most beautiful marble you can imagine.
"Astronomically Speaking: A Dictionary of Quotations on Astronomy and Physics" by C.C. Gaither and Alma E Cavazos-Gaither, (p. 262), 2003.
