Winged Moon

Imagine, if you will, a race of beings with the vision, the capacity, to reshape a moon into the greatest energon harvester in the universe. For those of you with no imagination, or are simply curious, the answer to that lies in the Winged Moon, designed to filter energon from the very fabric of spacetime and keep Cybertron healthy.

2019 IDW continuity
The Winged Moon was conceived by the Ascenticon visionary Termagax; two thousand workers laboured for kilocycles on one of Cybertron's moons, strip-mining the planetoid and rebuilding the hollowed-out planetoid into a gigantic energon-production facility. Once the work was done, the Winged Moon was moved into a low geostationary orbit over Iacon and equipped with a thruster array to keep its position constant, ensuring that it only ever skimmed Cybertron's atmosphere. The great space elevator known as the Tether, built from the ore harvested by the miners, connected the two worlds and allowed for the easy transport of workers and material to and from the Winged Moon.

The moon first came online three hundred kilocycles before Brainstorm's murder, with both Orion Pax and Megatron visiting it. As the moon began its inaugural harvest, Megatron opened their elevator to the vacuum so he could make a more convincing metaphor before he and Pax free-fell from the moon and back onto Cybertron. Though the moon represented a masterpiece of engineering, some would come to feel it was not particularly efficient at its job, finding the harvest of energon crystals to be a better way of refuelling the planet.

On Rubble's forty second cycle of existence, Bumblebee brought him to meet Wheeljack at the Tether where he was employed for the day. When evening fell, Bumblebee took his protege to a nearby rooftop so they could watch the moon commence its harvest, though Bumblebee felt compelled to point out some of the moon's criticisms. When the harvester sprung into operation however, its surface transforming to "wings" to allow for operation, Rubble declared it the most amazing thing he'd ever seen, a statement Bumblebee was hard pressed to challenge.

When Bumblebee was teaching Rubble about alternate modes, he found his protégé's attention had been captured by the moon finishing its harvest cycle.