The concept that 12 elementary particles assemble the entire universe may not accurately reflect our current understanding of particle physics and cosmology. The composition and structure of the universe involve a wide range of particles and processes that are still actively studied and researched by scientists.
In the Standard Model of particle physics, which is our current best framework for understanding fundamental particles and their interactions, there are 17 elementary particles. These include quarks (up, down, charm, strange, top, and bottom), leptons (electron, muon, tau, and their associated neutrinos), gauge bosons (photon, W and Z bosons, and gluons), and the Higgs boson. These particles are believed to be the building blocks of matter and the carriers of fundamental forces.
However, it's important to note that the composition of the universe involves more than just elementary particles. The universe is also comprised of dark matter, which does not interact through electromagnetic forces and remains largely mysterious. Additionally, the expansion and evolution of the universe are influenced by concepts such as dark energy and the cosmological constant, which are not directly associated with elementary particles.
Understanding the origins and structure of the universe is a complex and ongoing scientific endeavor. Scientists continue to conduct experiments, observations, and theoretical studies to deepen our understanding of the fundamental particles and forces that shape the cosmos.