Exploring the Universe
The Universe is vast beyond our imagination .It is mostly empty space .This space contains everything,from tiniest subatomic particle to galactic superstructures
It is estimated that the Universe contains 100 billion galaxies, each of which comprises 100 billion stars .The universe probably came to existence about 13-14 billion years ago.
According to “Big Bang theory” the Universe was came into existence when there was a blast in a hot ball of gas known as “Big Bang” and the particles which came out from “Big Bang” and spread everywhere and started forming the Stars,Planets,Comets, galaxies (a spiral-shaped superstructure contains all) .This theory was developed by (Georges Lemaitre) in 1920’s.
Science and technology 