Observing
- Sky & Telescope magazine's weekly sky notes.
- Heavens Above: How to see artificial satellites as well as comets and minor planets.
Help, Tutorials and Tuition
Software
- Stellarium: A free cross platform star chart.
- RegiStax: Free planetary image stacking and processing program.
- DeepSkyStacker: Free deep sky image stacking and processing program.
Space and Astronomy News
- Universe Today: News about spaceflight and space science.
- Space weather: News about solar activity, comets and asteroids.
- The planetary Society Blog: News about solar system exploration.