1) Why we're here is answered differently by different people. So any answer I give will be biased and not agreed upon by the majority.
2) The universe is the sum of everything around us that has:
a) Matter b) Space c) Time
Anything with those characteristics is within our universe.
3) There are no other types of universes. There is only the universe. The only other type of universe that could be theorized is one where antimatter was used instead of matter. Such universe's are in theory only and do not observably exist.
Plasma is the most common type of matter in the universe
I believe there is only one type of universe, a Quaternion four dimensional Universe. This Quaternion Universe has one real dimension and three vector dimensions. The universe has two "states", the Boundary state and the Internal state. The Boundary state is a minimum size, around r=150E24 meters. The Internal state is much larger than 150E24.
A type of explosion that some believe started the Universe.
Quasars are the unusual type of active galaxy in the universe.
Astrophysics
Plasma is the most common type of matter in the universe
Cosmologist
Irregular galaxy
type 42
yes. Lego universe will be able to be played on any type of computer
I believe there is only one type of universe, a Quaternion four dimensional Universe. This Quaternion Universe has one real dimension and three vector dimensions. The universe has two "states", the Boundary state and the Internal state. The Boundary state is a minimum size, around r=150E24 meters. The Internal state is much larger than 150E24.
A type of explosion that some believe started the Universe.
Elliptical
Astronomy and Astrophysics.
Quasars are the unusual type of active galaxy in the universe.
Theoretical type of universe with many histories existing simultaneously.
Muslims and the rest of the universe