CERN (CNN) - It's a big day for particle physics! Scientists at "CERN" believe they have found a fundamental building block of our universe, The elusive "Higgs Boson."
You may know it by another name.
It's also called the "God Particle."
For the last 18 months, researchers have been smashing protons together using the "Large Hadron Collider"
Today's announcement is just a preliminary result. But scientists say it is "very strong."
Atika Shubert explains what the Higgs Bosun is, and why it matters.
Until today, the so-called god particle - the key to our understanding of the universe. - existed only in theory. Not anymore.
Collecting data like this, scientists at CERN have announced the discovery - with 99.999% certainty - that the Higgs Boson does exist - the so called God Particle.
Professor Peter Higgs - now 83 years old - who first theorized its existence in 1964 - was in the audience for this historic moment.
"To me it's really an incredible thing that it's happened in my lifetime."
So what is the god particle and what does it do? It's the missing link - to this massive equation - the standard model of particle physics.
This is our understanding of how the universe works.
The Higgs Boson gives us mass, which is how we measure matter, the stuff we are made of. Scientists say without mass, stars, galaxies and planets would not have been able to spin themselves into existence after the big bang.
How did scientists find it? With a massive particle collider at CERN. 27 kilometers of tunnels under Switzerland and France.
Researchers smash particle beams together to see what's inside - effectively recreating the Big Bang trillions of times over and over.
This is what they saw: sub-atomic debris including the decayed remains of what they say appears to be the Higgs Boson - thereby proving its existence. But the mysteries of the universe are not solved yet.
Consider this: all those galaxies, planets and stars, everything we can see, make up only 4% of the universe. There's still a lot more to discover. Finding the Higgs Boson, the God Particle, just opens another door.
Atika Shubert, CNN London.