Life membership in the Moon Society is really simple: You can extend your membership at any time by paying additional dues at the current annual dues rate. If you extend your membership so that it expires 20 years or more in the future, then you become a Life Member.
A Life Member is entitled to all rights and privileges of active membership in the Moon Society, without need to pay additional dues, for the remainder of the member’s life.
Life members also automatically receive any membership incentives awarded to regular members who join or renew their memberships, such as the Artemis Project Reference Mission poster.