Bartleby
Bartleby.com: Bulfinch's Mythology: The Age of Fable
Bulfinch's collection of Greek and Roman myths is available here in full text format. A little known feature of this work is its sections on Eastern mythology, Northern mythology and a section on Druid religion.
Encyclopedia Mythica
Encyclopedia Mythica: Greek Mythology
Encyclopedia Mythica offers a comprehensive resource on Greek mythology. Content includes a look at the principal gods, Zeus's consorts and offspring, the descendants of Prometheus, and much, much more. Click on "browse articles" for a...
Nine Planets
The Nine Planets: An Overview of the Solar System
A detailed overview of the history, mythology, and current scientific knowledge of each of the planets and moons in the solar system.
NASA
Nasa Space Science Data Archive: Neptunian Satellite Fact Sheet
A pair of small tables of data that contain just about everything known about the moons of Neptune.
Other
Greek Mythology Today and Myth of the Month
A large Greek mythology site focused on students and expressing a great love of Greek myth. Contains the Myth of the Month, as well as Homework Help concerning myths. Humorous and colorful.