THE

UNIVERSE

WHAT’S THE ORIGIN OF THE UNIVERSE?

THE BIG BANG THEORY

A huge (very big) mass exploded and

all the pieces separated

expanding in all directions, forming

galaxies.

It happened 15 billion years ago

and the galaxies are still separating and

the Universe growing.

In 1923, Edwin Hubble created the biggest telescope in the world. Then, they discovered that the Universe is expanding and “The Big Bang Theory” was developed.