History repeated itself starting in 1949, when the 200-inch Hale Telescope took its first photograph of the night sky. Within a decade, astronomer Edwin Hubble used it - then the largest telescope in the world, at 100 inches across - to discover that galaxies exist beyond the Milky Way, and that the universe is expanding.

When the Hooker Telescope first looked skyward in 1917, no one knew what wonders it might reveal.