Beyond the classical states of matter, what are the modern states of matter?
1. Plasma: Plasma is the most common state of matter in the universe, but it is uncommonly found on Earth. This state of matter is comprised of free charged particles, such as ions and electrons. Similar to a gaseous state, however, it may generate a magnetic field. 
2. Supercritical fluid: Matter that lacks a clear distinction between being a gas and a liquid. This state is found at high temperatures and pressures.
3. Degenerative Matter: A highly dense state of matter due to very high pressures. This state of matter is naturally found in stars in their final evolutionary states. 
4. Bose-Einstein condensate: A phase of matter in which a large number of bosons all inhabit the same quantum state. This phase requires temperatures near absolute zero of very low density gas.
5. Fermionic condensate: Similar to Bose-Einstein condensate, except with fermions instead of bosons. 
6. Superconductivity: Certain elemental materials may achieve a ground state of superconductivity where there is no electrical resistance and magnetic flux fields are expelled. While most conductors will have reduced resistance as the temperature is lowered, superconductors will abruptly achieve zero resistance at a certain critical temperature. 
7. Superfluid: Some fluids may enter this state of matter where, at extremely low temperatures, they become able to flow without friction.
8. Supersolid: Similar to a superfluid, except it can move without friction in a rigid, solid shape.
9. Quantum spin liquid: A state of matter found in certain materials related to the quantum spin. In most magnetic materials, spins tend to form patterns based on how they interact with other neighboring spins. In a quantum spin liquid, however, they remain in a disordered state, never forming a pattern that prevents it from reaching a stable, ordered state.
10. String-net liquid: Atoms in this state have a consistent overall pattern like a solid, but their arrangement is unstable.
11. Time crystals: A quantum system of particles that exhibits non-kinetic motion of particles at their lowest-energy state. 
12. Rydberg polaron: An exotic state of matter created at low temperatures in which a very large atom contains other ordinary atoms between the nucleus and electrons. 
13. Black superionic ice: This matter is a phase of water that exists at extremely high pressures and temperatures.