Edgebind

When a celestial body is edgebound, the object is so close to the border of its universe that the distortion and gravity fluctuations caused by the walls surrounding the outer reaches of the reality bubble forces the object to "slide" across the surface relative to the motion of the borders.

Stars
Stars that are close to the borders tend to move slower than smaller objects. Since reality borders move in a way very similar to plate tectonics, the constant shifting and sliding of the walls often times cause stars to hurtle at high speed due to their immense gravity. This also frequently results in stars colliding with each other.

Unusual types of stars not seen anywhere else in the universes are found near borders. Amongst these, the most infamous is the lime giant, a green-colored star known to possess dangerously unstable elements that emit a highly radioactive aura around it. It also slides much, much quicker along the borders in comparison to other bodies.

Planets
Rogue planets that do not orbit a star slide slide at speeds that often times make them much too dangerous to live on. Due to border gravity, gas giants are almost nonexistant, as the gas that composes these planets are torn apart. Rockies often have strange elements and ores located within their core and crust, and very few are capable of life.

Examples of commonly known edgebound planets include Tescurion, (insert), (insert), and (insert).

Comets, Asteroids & Meteors
Small, rocky or icy objects like these are rarely seen in the borders. The gravity exerted upon the walls of universes often times simply suck these chunks of rock into the edge, dissintegrating them instantly. Large meteors that are further away from the borders are occasionally found slowly travelling around stars or even planets.

Black Holes/Wormholes
These objects do not form naturally near borders. Wormholes are always artificially created, and having them so close to the border means that they have punched a hole through reality and are leading into a pocket dimension or another universe. These wormholes are extremely dangerous, as debris is often hurtled out of the holes and into open space. This debris lands on planets and stars, most times destroying them. In addition, they can also weaken the stability of the walls, causing unstable gravitic fluctuations and the sudden disappearance of celestial bodies.

Black holes are much in the same manner as Edgebound wormholes, however they do not throw objects out - they suck everything in. Everything that's sucked into the black holes are ejected into Void, the space inbetween universes where nothing exists. These are equally dangerous, but most times the borders close up the hole before it does any severe damage.