Greenbelt Astronomy Club Membership Information Membership shall be open to all members of the public aged 13 years or older with an interest in astronomy upon payment of the annual dues. Membership is not required for attending public meetings or star parties.
Individual memberships count as a single vote.
All family members aged 13 years or older present at a meeting have one vote. This membership class is open for maintaining contacts with other astronomy clubs, or publicity or for other special events. It has no dues or voting privileges. Ask a High Energy Astronomer . Try the NASA Homepage or start at the NASA site map .