Humble Beginnings

Everything starts somewhere. For me, it’s here and for the universe, it was the Big Bang. The Big Bang as you probably know was a big explosion that created the universe. But why, how, when and where. But let’s go more in-depth into the explosion. What exploded? A singularity. An infinitely small, infinitely dense dot in space-time. A black hole has a singularity in the middle of it too. Lots of people say that it started by two atoms colliding, but this isn’t true. You see atoms are quite small relative to what we are used to and surrounded by. An average 10-year-old has many trillion atoms. But atoms are not infinitely small. The singularity is infinitely small remember? So let’s go smaller into the realm of subatomic particles!

Atoms are constructed out three key subatomic particles. The electron, the proton and the neutron. The proton and neutron sit in the nucleus of the atom and the electrons circle around the nucleus in different “shells”. A shell is a circle around the nucleus but they don’t all have the same radius. So some are further out and some are closer to the nucleus. The electron has a charge of -1 and the proton has a charge of +1. Neutrons have a charge of zero. Atoms always have a charge of zero so there is always the same number of protons as electrons. But the big bang was in the fifth state of matter. After plasma what’s the fourth state of matter (plasma is when the atoms have so much energy that the electrons shoot out of their shells) is quark-gluon-plasma. This is when the nucleus of neutrons and protons split into individual particles. The force carriers of the strong force (gluons) usually hold the particles together but instead, they get flung out with the protons and neutrons. Then the protons and neutrons almost melt into their base particles, quarks. Quarks also get held together by gluons but they all get spat out to other places. In the end, you have a bunch of quarks, a bunch of gluons and a bunch of free-flying electrons: quark-gluon-plasma.

So did the Big Bang begin with two subatomic particles colliding? Well, most likely not. As all the matter was in a singularity, this would have meant that all of the matter would have been squashed together and not moving. So how did it all begin? The true answer is, well we don’t know. Christians think that God said
“Let there be light”
Although scientists believe that the Big Bang created space-time. So there was no time before the Big Bang to say
“Let there be light”
But on the subject on time, when was the Big Bang? Simply 13.7 billion years ago. But are we just interested in when the event happened, not what happened after? That’s what I thought. Well just have a look at the picture below and click on it to get some more information(not sponsored).

But how. How do we know this? Well, all of the singularity quark-gluon-plasma stuff had been tested in CERN’s LHC (Large Hadron Collider). As for the age well click that image up there ^. But what about the Big Bang itself. Why do we think that created the universe? It all started with dust. On May 20, 1964, Robert Wilson and Arno Penzias were using their radio telescope. The images were a bit muffled like there was dust on the detecter. Some deep cleaning later the muffle was still there! They rotated the telescope to see if it was that area in space, but it was everywhere! Later they started hypothesizing what it could be and it turned out to be the cosmic microwave background radiation. Here’s a picture of the universe from Earth in the wavelength of the microwave spectrum.

Cosmic Microwave Background Radiation

I may have not begun my journey quite as spectacularly as the Big Bang but everything begins somewhere. And this website is where your journey begins. With your first steps into the Universe!

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