Here are some mailing lists you might like to join.
- International Space Station Viewing
- Hosted by NASA, join this list to get an e-mail alert in time to see the ISS pass over.
- To sign up, go to Spot The Station, and click the Sign Up link.
- Helena Astronomical Society
- The Helena Astronomical Society is our area's local astronomy club. We maintain a low volume e-mail list that you can join by sending an e-mail to has-subscribe@helena-astronomical-society,org