The Birth of Universe

The Universe was created approximately 13.77 billion years ago. It all started from a small point, just a few millimeters long. This point was infinitely dense and very hot. With the explosion of this tiny point (also known as Singularity) – time, space, matter and energy were created. The explosion of this tiny point is known as The Big Bang.

After this explosion, in the very first second, the universe expanded with a speed more than the speed of light. It doubled in every 10-34 seconds (10 to the power -34). Within fraction of second, gravity was also formed.

In the first second after the universe began, the surrounding temperature was 10 billion degrees Fahrenheit (5.5 billion degrees Celsius). Energy changed into matter and anti-matter. The anti-matter and matter destroyed each other. Luckily some matter survived.

When the universe was born, it underwent a rapid inflation and expansion. Around 3,80,000 years after the big bang, some radiation was leftover which is called Cosmic Microwave Background (CMB) or also known as “afterglow”. CMB is invisible using optical telescopes, radio telescopes are able to detect the faint signal (or glow). The CMB is visible at a distance of 13.8 billion light years in all directions from Earth, leading scientists to determine that this is the true age of the Universe.

Since the explosion, the universe is continuously evolving. The evolution of the Universe is categorized into 2 eras – Radiation Era and Matter Era. In the radiation era, first element Helium was created from neutrons and protons. In the Matter era, temperature cooled down and Hydrogen was formed. All stars, planets and Galaxies came into existence. The heat of the stars helped to create all other elements from Hydrogen and Helium. All these elements were the building blocks for life.

The Origin of Universe is the origin of everything!


Dense – Density is a measurement that compares the amount of matter an object has to its volume. An object with much matter in a certain volume has high density. An object with little matter in the same amount of volume has a low density

Matter – Matter is anything that occupies space and has mass. All physical objects are composed of matter, and an easily observed property of matter is its state or phase. The classical states of matter are solid, liquid and gas.

Atom – The smallest particle of a chemical element that can exist.

Electron –  Part of atom with a negative charge.

Proton – Part of atom with a positive charge

Neutrons – Part of atom with no charge

Nucleus (plural Nuclei) – It is the center of the atom which consists of Protons and Neutrons.

Element – An element is a pure substance that is made from a single type of atom. Elements are the building blocks for all the rest of the matter in the world.

Light year – Distance travelled by light in one year (nearly 6 million miles)