- *Neptune's Moon: Nereid
Nereid's orbit is the most highly eccentric of any planet or satellite in the solar system; its distance from Neptune varies from 1,353,600 to 9,623,700 kilometers.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/nereid.html
(Added: Mon Oct 28 2002)
- *Neptune's Moon: Proteus
Proteus is irregular (non-spherical) in shape. Proteus is probably about as big as an irregular body can be before its gravity pulls it into a more spherical shape.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/proteus.html
(Added: Mon Oct 28 2002)
- *Neptune's Moon: Triton
Triton has been visited by only one spacecraft, Voyager 2 on Aug 25 1989. Almost everything we know about it comes from this encounter.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/triton.html
(Added: Sat Oct 26 2002)
- *Neptune's Small Moons
Neptune's innermost four moons are Naiad, Thalassa, Despina and Galatea.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/nepmoons.html
(Added: Mon Oct 28 2002)
- *Netune's Moon: Larissa
Harold Reitsema is now usually credited with the discovery of Larissa by ground-based stellar occultation observations.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/larissa.html
(Added: Mon Oct 28 2002)
- Astronomy Picture of the Day: Neptune
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
http://antwrp.gsfc.nasa.gov/apod/uranus.html
(Added: Mon Oct 28 2002)
- Discovery of Neptune
One of the most controversial episodes in the history of British science will be the subject of the next National Astronomy Week, at the end of September 1996. It concerns the failure of British astronomers to discover the planet Neptune 150 years ago, despite the existence of calculations that predicted its existence.
http://www.u-net.com/ph/naw96/discover.htm
(Added: Sat Oct 26 2002)
- Great Dark Spot
Feathery white clouds fill the boundary between the dark and light blue regions on the Great Dark Spot. The pinwheel shape of both the dark boundary and the white cirrus suggests that the storm system rotates counterclockwise. Periodic small scale patterns in the white cloud, possibly waves, are short lived and do not persist from one Neptunian rotation to the next.
http://www.solarviews.com/eng/neptune.htm#darkspot
(Added: Sat Oct 26 2002)
- Neptune - Hubble Space Telescope Images
Amazing pictures from the worlds most well know telescope. Images are organized by year and are provided directly from Hubble's home, the Space Telescope Science Institute.
http://oposite.stsci.edu/pubinfo/SolarSystemT.html#Neptune
(Added: Mon Oct 28 2002)
- Neptune - The Nine Planets
The Nine Planets is an overview of the history, mythology, and current scientific knowledge of each of the planets and moons in our solar system. Each page has text and images, some have sounds and movies, most provide references to additional related information.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/neptune.html
(Added: Sun Oct 06 2002)
- Neptune Fact Sheet
Contains the mass, volume, escape velocity, orbital elements, spin rate, information about the moons of Neptune, and many other parameters.
http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html
(Added: Sun Oct 06 2002)
- Neptune's Ring System
Evidence for incomplete arcs around Neptune first arose in the mid-1980's, when stellar occultation experiments were found to occasionally show an extra "blink" just before or after the planet occulted the star.
http://ringmaster.arc.nasa.gov/neptune/neptune.html
(Added: Mon Oct 28 2002)
- Neptune's Rings
Neptune's rings were first detected in star occultation experiments from Earth in 1983, but they were very difficult to study before the data from Voyager 2.
http://csep10.phys.utk.edu/astr161/lect/neptune/rings.html
(Added: Sat Oct 26 2002)
- Surface and Interior of Neptune
The interior is presumed to contain a rocky core with an icy mantle topped by a deep layer of liquid hydrogen. Voyager 2's instruments detected a complex magnetic field.
http://csep10.phys.utk.edu/astr161/lect/neptune/surface.html
(Added: Sat Oct 26 2002)
- Voyager Mission to Neptune
In the summer of 1989, NASA's Voyager 2 became the first spacecraft to observe the planet Neptune, its final planetary target.
http://voyager.jpl.nasa.gov/science/neptune.html
(Added: Sat Oct 26 2002)
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