Trudy E. Bell—Neptune: From Grand Discovery to a World Revealed
Neptune’s 1846 discovery is among the most celebrated in astronomy. Neptune was not seen first through a telescope. It was located using Isaac Newton’s theory of universal gravitation. In Neptune: From Grand Discovery to a World Revealed, NASW member Trudy E. Bell and colleagues provide perspective on both astronomy’s past and recent research suggesting a possible “Planet Nine” still further away.