Our universe

 About 13.7 billion years ago the universe was formed in a massive explosion called The Big Bang. The Universe consists of everything that exists:

1.  Matter
2. Space
3. Time
4. Energy

All of the above are part of the universe .

Energy is of various types: light, sound, motion and even heat. Matter, on the other hand, can be easily seen with the naked eye . All the objects around us are made up of matter. 

Even today, the universe continues to expand , cool and change. This phenomenon was discovered by the American astronomer, Vesto Slipher in the 1910.

Big Bang➡️ 200 million years after Big Bang➡️ Formation of stars➡️ 500 million years after the Big Bang➡️ Formation of galaxies➡️ 1 billion years after Big Bang➡️ Galaxies with different shapes exist in the universe➡️ 9 billion years after Big Bang➡️ Formation of our solar system