Is there more matter or antimatter in the universe?

The Big Bang should have created equal amounts of matter and antimatter in the early universe. But today, everything we see from the smallest life forms on Earth to the largest stellar objects is made almost entirely of matter. Comparatively, there is not much antimatter to be found.

What is antimatter annihilation?

Antimatter particles are almost identical to their matter counterparts except that they carry the opposite charge and spin. When antimatter meets matter, they immediately annihilate into energy.

Is Mirror matter the same as antimatter?

At first, mirror matter may sound a bit like antimatter (which is ordinary matter with an opposite charge). However, while antimatter interacts very strongly with ordinary matter, annihilating itself into photons, mirror matter would interact very weakly with ordinary matter.

What is positronium atom?

Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. The energy levels of the two particles are similar to that of the hydrogen atom (which is a bound state of a proton and an electron).

What are some deficiencies in the standard model of Physics?

There are still some deficiencies in the Standard Model of physics, such as the origin of mass, the strong CP problem, neutrino mass, matter–antimatter asymmetry, and the nature of dark matter and dark energy. Another problem lies within the mathematical framework of the Standard Model itself—the…

What are some questions about physics that are beyond the standard?

There are still some questions beyond the Standard Model of physics, such as the strong CP problem, neutrino mass, matter–antimatter asymmetry, and the nature of dark matter and dark energy.

What are some of the major unsolved problems in physics?

Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.

Is there evidence of large-scale anisotropy in the universe?

There are several other observations revealing large-scale anisotropy. The optical polarization from quasars shows polarization alignment over a very large scale of Gpc. The cosmic-microwave-background data shows several features of anisotropy, which are not consistent with the Big Bang model.