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 astroplanet.info

August 20, 1975
NASA launches Viking 1 planetary probe to Mars.

August 20, 1977
NASA launches the Voyager 2 spacecraft.

...also in Astronomy Today
courtesy of astroplanet.info

August 20, 2008
Venus passes within 1° of Mercury