This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Marshall Applewhite was born in 1931 in Spur, Texas, and spent years as a music professor before a period of personal crisis in the early 1970s. Out of that crisis he co-founded a UFO-oriented religious movement with a nurse named Bonnie Nettles, teaching that the human body was merely a vehicle and that a select group of prepared souls could undergo a physical and spiritual transition, which he called the "Next Level," by way of a literal spacecraft.
Applewhite was known within the group by a sequence of adopted names, including "Bo" and later "Do," and he led the movement, eventually called Heaven's Gate, through decades of communal living, celibacy, and periodic recruitment drives that brought new members in and let others leave. The group he co-founded with Nettles held to that same core teaching, of bodies as vehicles and a coming departure by spacecraft, across those decades with little outward change.
That teaching, and the discipline of communal celibate life built around it, gave Heaven's Gate a structure unusual even among new religious movements of its era, one organized less around a fixed doctrine of the divine and more around a specific claim about departure and transition to another level of existence.
The group Applewhite and Nettles founded together in the early 1970s would go on to become one of the most closely studied new religious movements of the late twentieth century, and its distinguishing teachings, the vehicle body, the Next Level, and the promised spacecraft, trace directly back to that founding partnership.