Astronomy

Jet Propulsion Lab - What's going on at this awe-inspiring place?
NASA Headlines - interesting features (like "Strange Moonlight") published by NASA folks
StarDate Online - Your Guide to the Universe
The Nature of the Universe Great Debate in 1998
Phil Plait's Bad Astronomy: Bitesize Astronomy
Sky and Telescope - Home
Heavens Above - Great site for finding observing targets like Earth-orbiting satellites and much more - you can set your lat/lon!
StarChild: A Learning Center for Young Astronomers
Molecular Expressions: Science, Optics and You - Powers Of 10: Interactive Java Tutorial - EXCELLENT visualization of the scale of the Universe!!

APOD: 2002 February 24 - Isaac Newton Explains the Solar System
Extrasolar Planets Encyclopaedia
Extrasolar Visions - An Extrasolar Planets Guide
NSSDC Photo Gallery National Space Science Data Center
Lunar Eclipse Computer
The Nine Planets - EXCELLENT resource - everything you'd ever want to know about any object in our solar system!
Views of the Solar System has been created as an educational tour of the solar system. It contains images and information about the Sun, planets, moons, asteroids, comets and meteoroids found within the solar system.
NASA's Observatorium - NASA's Observatorium is a public access site for Earth and space data. It has pictures of the Earth, planets, stars, and other cool stuff, as well as the stories behind those images.
Solar System Live Welcome to Solar System Live, the interactive Orrery of the Web. You can view the entire Solar System, or just the inner planets (through the orbit of Mars). Controls allow you to set time and date, viewpoint, observing location, orbital elements to track an asteroid or comet, and a variety of other parameters.