The Neptune File is the first full account of the dramatic events surrounding the eighth planet's discovery, and the story of two remarkable men who were able to "see" on paper what astronomers looking through telescopes for more than 200 years had overlooked.
On June 26, 1841, John Couch Adams, a brilliant young mathematician at Cambridge University, chanced upon a report by England's Astronomer Royal, George Airy, describing unsuccessful attempts to explain the mystifying orbital behavior of the planet Uranus, discovered 65 years earlier. Adams theorized that Uranus's orbit was being affected by the gravitational pull of another, as-yet-unseen planet. Furthermore, he believed that he did not need to see the planet to know where it was. Four years later, his daring mathematical calculations pinpointed the planet's location, but Airy failed to act on themâa controversial lapse that would have international repercussions.
Soon after Adams's "proof," a rival French astronomer, Urbain Le Verrier, also calculated the planet's position, and the race was on to actually view it. Found just where Adams and Le Verrier had predicted, the planet was named Neptuneâand as the first celestial object located through calculation rather than observation, its discovery pioneered a new method for planet hunting.
Drawing on long-lost documents in George Airy's Neptune scrapbook, which resurfaced mysteriously at an observatory in Chile in 1999, The Neptune File is a crackling good human drama and a fascinating exploration of the science that underpins planetary astronomy. And the tale continues to unfold, as Tom Standage relates: Since 1995, astronomers have discovered more than 40 planets outside our solar system, opening an intriguing window on the universe. Yet none of these planets have ever been seen. Their discoveryâand the history of scienceâowes much to the two men who unlocked the secret to locating unseen new worlds.
About: Traces mathematician John Couch Adam's search to find the position of planet Uranus using mathematical calculations, and describes the Victorian era controversies surrounding planetary discoveries.
About: Describes the dramatic events surrounding the discovery of Neptune, the eighth planet in the solar system, and profiles the two men, British mathematician John Couch Adams and French astronomer Urbain Le Verrier who predicted where the planet would be based on mathematical calculations rather than on observation.
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