But actually nothing is forever. As a matter
of fact we know that the solar system---that is
the Sun and the planets (mercury, Venus, Earth,
Mars, Jupiter, Saturn, Uranus and Neptune) plus
the minor planets like Pluto, and the asteroid
and the comets, all formed at the same time long
Well, the answer is 4,567,000,000 years
ago... that is 4.57 billion years ago!!!!
The average human being generally lives for
about 80 years! So the solar system is much,
However it will not be here forever.
We know that in about 5,000,000,000 years
from now, the Sun will run out of fuel and it
will expand to become a red giant star. When it
does that, it will swallow up the inner planets
and the rocks of the earth will evaporate.
Of course that is a long, long time from
So, there is nothing to worry about.
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