- Amateur Astronomy
- Astro Art
- Astro-Photography and Similars
- Astronomia
- Astronomy for all
- Astronomy
- Astronomy Photos
- Astrophotography - Astronomy - Astrophysics
- Canon After Dark
- Canon DSLR User Group
- Deep Space Astrophotography
- FlickrCentral
- Fox Mustangs (1979-1993)
- Gazing Into Outer Space
- Globe and Mail Reader Submissions
- International CONTEST group
- Most Beautiful Astronomical Objects
- Night Sky, The
- NPR Look At This
- Sky
- ZWO ASI Astronomy