The Solar System – 9B yrs

The Solar System began forming about 4.6 billion years ago, or 9 billion years after the Big Bang. Our nebula, which is a cloud of gas and dust collapsed under it's own gravity and started to spin faster and faster. In the center of nebula formed a dense clump of matter. The clump of matter …

The First Stars – 200M yrs

The first stars were formed about 200 million years after the Big Bang. The matters in the universe like hydrogen, helium, and lithium condensed due to gravity, eventually to the point where stars began to form. Large amounts of matter collapsed to form galaxies. The first galaxy was formed when the the universe was around …

Recombination – 380,000 yrs

It was around 380,000 years after the big bang, when the universe cooled enough to the point where stable neutral atoms were able to be created. This major event was called Recombination. Prior to this point, electrons were unable to bond with atomic nuclei because they were moving around at high speeds. Even when they bonded, random …

The Big Bang – 0 yrs

The universe that we know today all started way back about 13.7 billion year ago. In the beginning, there was nothing. And then there was everything. Our universe first started as an infinitely hot and infinitely dense point. Contrary to many people's beliefs, the big bang was not an explosion. The hot and dense point …