| Astronomical Organizations (8) | Astronomy Clubs (3) |
| Astronomy Publications (3) | Favorite Software (5) |
| NASA (5) | Observatories (1) |
| On Line Shops (1) |
Astronomy ClubsOther astronomy clubs from around the U.S.
| Michigan – Grand Rapids Amateur Astronomical Association Grand Rapids Amateur Astronomical Association | |
| Michigan – Kalamazoo Astronomical Society Kalamazoo Astronomical Society | |
| Michigan – Muskegon Astronomical Society Muskegon Astronomical Society |
