Astronomy Clubs:

• Amateur Astronomers Association of Pittsburgh Inc.
• ORAS
• Lackawanna Astronomical Society
• Lehigh Valley Amateur Astronomical Society, Inc
• Delaware Valley Amateur Astronomers
• Berks County Amateur Astronomical Society
• The Astronomical Society of Harrisburg
• CP0 - Central Pennsylvania Observers
• Sky Online Magazine (Sky & Telescope's Astro Directory)
  1. Club and Organization finder

Constellations:

• Munich Astro Archiv Constellation Pages. 

Deep Sky:

• NGC/IC Project Home Page
• DSS Window   (The Digital Sky Survey)
• ASP List of NGC Images
• SEDS Messier Database
• AAO Colour photographs (Anglo Australian Observatory)

Comets:

• This month's Comets
• This week's Comets

Government:

• NASA Goddard Space Flight Center Homepage
• NASA Images
• Hubble Space Telescope Pictures
• Auroral Activity

Light Pollution:

• International Dark Sky Assoc.
• NELPAG
• NJ Light Pollution
• PA Outdoor Lighting Council
• Campaign For Dark Skies
• Your Online Guide To Light Pollution

Magazines:

• Astronomy Magazine
• Sky Online

Moon

• Data Online (U.S. Naval Observatory, Astronomical Applications)
• Earth and Moon Viewer
  • Named Lunar Formations
• The Hitchhiker's Guide to the Moon
• Virtual Reality Moon Phase Pictures
  • Time Service Department
• A Day in the Life of the Moon
• Once in a Blue Moon

News Groups: USENET is an amazing resource often overlooked.

• Alt.Astronomy : FAQ Home Page
• Alt.Astronomy.Solar
• Alt.Binaries.Pictures.Astro
• Alt.Sci.Astro.Eclipses
• Sci.Astro : FAQ Home Page
• Sci.Astro.Ameateur
• Sci.Astro.CCD-Imaging
• Sci.Astro.Fits
• Sci.Astro.Hubble
• Sci.Astro.Planetarium
• Sci.Astro.Research
• Sci.Astro.Satellites.Visual-Observe
• Sci.Astro.SETI

Satellites

• Visual Satellite Observer's Home Page (UK)
• SatPasses - Satellite Passes Over North American Cities
• Track the Satellites The Shuttle, Hubble, Mir, UARS & COBE
• Heavens Above Satellite locator Iridium Flare prediction site.

Telescope Making

• Amateur Telescope Makers of Boston
• ATM Journal
• Amateur Telescope Making Tallahassee Astronomical Society

Telescope Manufactures

• Orion Telescopes & Binoculars
• Meade - Meade Instruments Corporation
• Celestron - Celestron LLC
• Discovery Telescopes - Made in America

TV Shows

• STAR HUSTLER HOME PAGE

AltaVista: Main Page (Search Engine)

Astro Web   Astronomy/Astrophysics on the Internet.