ILLUSTRATED
ENCYCLOPEDI
SPACE
Origin of the Universe
The
universe originated around 15 billion years ago .It began by expanding from a
very tiny, dense cloud of hot gases .The universe was made up of hydrogen and a
small amount of helium .In the beginning ,there were no stars and planets .The
first star came into existence when the universe was around 100 million years
old .The sun originated around 4.49 billion years ago.
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