There are a number of things that we still don’t understand about our universe. Case in point, since the 1930s, scientists have been searching for particles that are simultaneously matter and antimatter. Such a particle may seem confusing, as a particle’s antimatter has equal mass but opposite charge, and (notably) when matter meets its antimatter counterpart the two annihilate one another in a burst of energy. However, the Majorana particle is believed to be matter and antimatter—making it a robust and stable particle. Our physics indicates that they exist but, until now, we haven’t been able to find them.
But we may be one step closer to a comprehensive understanding of the physics of our universe.