Planet - Neptune

Welcome to Planet Neptune
A website about the planet Neptune

Named after the Roman god of the sea, Neptune is a gas giant which is visable to telescopic viewing. The existence of Neptune was mathmatically predicted by Urban Le Verrier in 1846 and was discovered on September 23, 1846 by James Challis with 1° of the position predicted by Le Verrier.

Today in Astronomy History
courtesy of

July 3, 1841
John Couch Adams decides on this date to determine the position of an unknown planet by examining the irregularities in the motion of Uranus. It takes him 4 years to do the work.

July 3, 2006
Asteroid named 2004 XP14 flies within 268,624 miles of Earth.

Home | Observing Neptune | Neptunian Facts | Moons of Neptune | Neptunian Opposition | Glossary | Email | Links