A Microverse is a relatively small finite -verse, usually slightly larger than superclusters, contained within a Milliverse. Most Microverses share laws of physics with their parent Milliverse and Universe, but a few of them have distinct laws.
Microverses behave like black holes in that they cause anything near them to enter. However, to exit a microverse, you need to tear a hole through it's borders, which requires exerting a very large (but not impossible) amount of force on it.
In other Milliverses[]
MILI-1[]
Microverses in MILI-1, the closest milliverse, at least the ones with the same laws of physics, are typically large semi-voids with sparse populations of stars scattered throughout. Most are 10+ times less dense than a typical galaxy. There are a few dense ones we've discovered, but they are quite rare.
Microverses are not very luminous and are millions of light-years away from us, so it is hard to detect them. The first known Microverse was discovered in 3120 by the Chinese Kilometer Space Telescope (CKST) via gravitational microlensing.
Formation[]
Microverses form when a region of a Milliverse is heated up by an extreme amount. This creates Big Bang-like conditions and will cause a microverse to form. The Microverse will expand and cool down like a traditional universe, however the expansion will abruptly stop at a certain maximum size.