Yes, antimatter is real. Antimatter is composed of antiparticles, which are counterparts to the particles that make up ordinary matter. Each particle of ordinary matter has a corresponding antiparticle with the same mass but opposite charge.
For example, the antiparticle of an electron, which has a negative charge, is called a positron and has a positive charge. Similarly, the antiparticle of a proton, which has a positive charge, is called an antiproton and has a negative charge.
When a particle and its corresponding antiparticle come into contact, they can annihilate each other, releasing energy in the process. This annihilation process is one of the key features of antimatter.
Antimatter has been experimentally observed and produced in laboratories. It is used in various scientific and medical applications, such as in positron emission tomography (PET) scans, where positrons are used as tracers to image internal body structures.
While antimatter is real, it is challenging to produce and store large quantities of it due to its tendency to annihilate upon contact with ordinary matter. However, ongoing research continues to investigate antimatter and its properties for potential future applications and to deepen our understanding of fundamental physics.