most scientists believe that the Universe started thousands of millions of years ago with an event that they call the BIG BANG!

we imagine that it was some koind of explosion in which all the matter and energy in the Universe was created.At first the Universe was incredibly dense and hot.later,as it expanded outwards,the galaxies and the stars formed.the whole universe has gone on growing for ever or will start to get smaller again.

scientists are fairly sure that the theory is right since they found a faint radio signal that seems to fill all of space.the only explanation for the radio signal is that it is energy left over from the big bang.!

explanation:

in this text hard word is obvious! by colourful stripe.