The David Rittenhouse Orrery is one of the University's most valuable artifacts. A model of the solar system from the 18th century, it resides on the first floor of Van Pelt Library. Penn rival Princeton has an older one - but theirs is damaged.
The David Rittenhouse Orrery is one of the University's most valuable artifacts. A model of the solar system from the 18th century, it resides on the first floor of Van Pelt Library. Penn rival Princeton has an older one - but theirs is damaged.