For links to local astronomical societies please see our affiliated societies pages.

General Astronomy Websites

Heavens Above - ISS tracking and prediction site
Space Weather - News and information about the Earth-Sun environment
Cloudy Nights - Astronomy Forum (US Focus)
Ice in Space - Astronomy Forum (Australian Focus)

Research Organisations

IAU (International Astronomical Union)
μFUN (Microlensing Followup Network)
NASA (National Aeronautics and Space Administration)
ESA (European Space Agency)
ESO (European Southern Observatories)
AAVSO American Association of Variable Star Observers
AURA (Association of Universities for Research in Astronomy)
 

Research/Observing Assistance

SIMBAD (Astronomical Database, bibliography, cross-identifacations)
Aladin (Interactive Sky Atlas)
Astrophysics Data System (Digital library portal)
arXiv (Repository of scientific paper preprints)
CBAT (Central Beurau for Astronomical Telegrams)
VSX (Variable Star Index)
VSP (Variable Star Plotter)

NZ tertiary astronomy courses

Free astronomy software and tools

Stellarium - Open source planetarium software
Carte Du Ceil - Planetarium software with advanced cataloges and features
AAVSO Software Directory - Collection of tools for recording and analysis of Variable stars
NinePlanets - A collection of many astronomy software titles for all operating systems