There are many different stories about how the world started off. For example, according to the Bushongo people of central Africa, in the beginning there was only darkness, water and the great god Bumba. One day Bumba, in pain from a stomach ache, vomited up the Sun. The Sun dried up some of the water, leaving land. Still in pain, Bumba vomited up the Moon, the stars and then some animals — the leopard, the crocodile, the turtle and finally man.
The first scientific evidence to answer these questions was discovered about a century ago. It was found that other galaxies are moving away from us. The Universe is expanding, galaxies are getting further apart. This means that galaxies were closer together in the past. Nearly 14 billion years ago, the Universe would have been in a very hot and dense state. The moment it started to move apart is called the Big Bang.
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