A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. Within Paneidoverse, they are massive weaves that may exist within or parallel to a verse and are finite with a definite shape within the Anticosmis. Every galaxy has at least a single verse it belongs to. Within galaxies, there exist sets of gravitationally bound non-stellar objects that orbit around a star or star systems called planetary systems.
Galaxies are the only visible connections to verses and can be viewed through telescopic vision. Intergalactic travel is also possible via a spacecraft or superior teleportation. The latter, however, is typically known to the more ancient members of Those Who Know.
Galaxies are finite, with definitive "ends" that lead to other galaxies, if there are any present in the direction one travels toward. The "space" that surrounds the galaxies, or the Anticosmis itself, cannot be accessed if there is nowhere to go, and those who have traveled to the "end" of their galaxy in such cases find themselves in a void where they can visibly make out the shape of their galaxy, but cannot go anywhere else but back.
All galaxies are quite young, even if the objects within them are older. As such, there aren't many spatial objects and stellar remnants save perhaps a handful in each, including stars and planets. This may be because simple verses were created before the weaving of galaxies.
The types of lifeforms that exist within galaxies are innumerable, as typically trillions of lifeforms exist within a single galaxy at a time. This is not limited to microscopic organisms such as bacteria that help other lifeforms exist.
The most common lifeforms, however, are humanoid in appearance after the human species, which in turn are based upon the appearance of @Sir Vee, the One Who Knows. There are at least several thousand types of humanoid species within all of the Paneidoverse.