- theory: an attempt to explain a scientific concept
- matter: anything that has mass and occupies space
- antimatter: material made up of antiparticles
- subatomic particle: a particle that is smaller than an atom
- identical: exactly the same as something else
- electron: a type of subatomic particle with a negative electrical charge
- Big Bang: the explosion that likely created the universe
1. The physicist who predicted the existence of antimatter was
The physicist who predicted the existence of antimatter was Paul Dirac.
2. An antiparticle is almost identical to a particle, except for its
An antiparticle is almost identical to a particle, except for its charge.
3. When particles and antiparticles come into contact, they
When particles and antiparticles come into contact, they destroy each other.
- For years, scientists have debated the reason why our universe has more matter than antimatter. Some scientists have even suggested the idea that the Big Bang created another, parallel universe, made up mostly of antimatter. However, there isn’t a lot of evidence for this. Do you think scientists will ever know the answer to this question, or are there just some things about the universe we will never understand?
In 1928, British physicist Paul Dirac predicted the existence of antimatter. His theory was that every type of subatomic particle had an antiparticle. He believed that an antiparticle would be almost identical to a normal particle, only with an opposite electrical charge. This theory was proven two years later, when American physicist Carl David Anderson discovered a positively-charged electron, later named the “positron”. Today, physicists know that our universe contains both matter and antimatter. They have even successfully created antimatter atoms. However, antimatter is still one of the greatest mysteries in the universe. Scientific theory states that the Big Bang should have created equal amounts of matter and antimatter. The problem with this idea is the fact that matter and antimatter instantly destroy each other when they come into contact. This means that if the Big Bang had created as much antimatter as it did matter, the universe would not exist today.