Quite simply, the universe consists of everything we know. There are no proven thories of so-called "extrauniversal" matter at this time so everything we know as fact, is contained within the universe and is apart of the universe itself. Theoretically, knowing of anything extrauniversal would require that the observer also exist outside of the universe, just like how it is impossible for humans to properly perceive anything that exists in 4 spacial dimensions and just like how humans only see in 2 dimensions (If humans perceived in 3 dimensions, you would see the back of everything as well as the front at the same time).
So as far as factual evidence goes, the universe consists of everything.
Hydrogen
Tectonic plate consist of lithospheric mantle overlain by crustal
stem cells usually consist of a nucleus, cytoplasm and a big toe sticking out of it
just DNA
Fire and water
billions
only in may
tony is awesome
Janam gurung
[object Object]
Hydrogen
The univeres magical device called "mating".
No, it should remain constant.
Edwin Hubble
there is no center of the universe the univeresenever ends the same way that numbers never end
The answer to this question is unknown to all people on earth when astronasts go in space they never find out the real accurate answer
There are many emitters in the universe. For example, the Sun is an emitter of electromagnetic waves and certain types of particles. It would help if you were more specific.