Vatican Observatory
In 1906, John was called by Pope Pius X to take charge of the Vatican Observatory in Rome. He died in Rome in 1930.
The crater Hagen on the Moon is named after him.
Read more about this topic: Johann Georg Hagen
Famous quotes containing the word observatory:
“Where there is an observatory and a telescope, we expect that any eyes will see new worlds at once.”
—Henry David Thoreau (1817–1862)