Hebb is yet another unimaginably tiny verse. Like Heaa, it is extremely hard to observe. Only 5 have been closely observed, with only one image of a Hebb existing. It has been estimated that even more Hebbs exist than Heaas, with a lot of them being outside of the Heaas.
Hebbs seem to have trillions of tiny, glowing dots in them, with them all varying in color and size. Further research is ongoing, but is difficult due how hard it is to contain Hebbs.
In an experiment, 2 Hebbs were made to collide into each other at high speeds. This caused a bright explosion about 1 mm in diameter, which is much bigger than the Hebbs themselves. Similar explosions have been recorded many times in different places, and it is like that colliding Hebbs caused this. The frequency of this event is relatively common, but rarely noticed due to its small size.