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Astronomy

Astronomy Picture Of The Day
Everyday a different view of the awesome universe to which we belong.
Celestia
A truly marvelous program for exploring all things in the cosmos! If you ever wanted to explore the solar system or beyond, download this program immediately.
Clear Sky Clocks
An enormous database of seeing condition predictions all over North America. An excellent reference when planning your next observing session.
Heavens Above!
Want to track satellites in earth orbit? This site's for you. You can register to receive personalized information based upon your location. A wealth of other astronomical information, too!
Hubble Site
The ultimate source for all photographs taken by the Hubble Space Telescope (HST). A truly awe-inspiring collection.
SEDS Messier Database
A comprehensive reference of the famous deep-sky objects Charles Messier cataloged in the 18th century. I return to this website regularly for detailed information on these beauties of the night sky.
Sky & Telescope
The website of Sky & Telescope magazine. Lots of current events, observing tips, an almanac customizable for your location, and much more.
Skymaps.com
A great place to find all sorts of astronomical maps and charts, including monthly Adobe Acrobat (PDF) sky charts you can download for your own non-commercial use.
Solar & Heliospheric Observatory (SOHO)
The home page for SOHO. Impressive photos, movies and other information from its many years studying our sun.
South Bay Astronomical Society
The home of the astronomy group to which I belong. Based in Torrance, CA, the group has an active outreach program in the community, regular in-town and remote dark-sky observing sessions, etc.
The Nine Planets
A comprehensive reference for the major objects in our Solar System. I highly recommend this site for information on objects in our "cosmic backyard".
The Nine Planets for Kids!
A companion to The Nine Planets, geared specifically for kids.
Weasner's Mighty ETX Site
Do you own a Meade ETX telescope? You must visit this site! It's considered one of the best sources of information for this instrument - and happens to be the brainchild of a friend of mine.