How long will the Sun continue to shine? A shining and 'well
functioning' Sun is critical for our survival on Earth. The Sun
was formed almost five billion years ago. At that time, a gas
and dust cloud became so condensed due to its own gravity that
hydrogen nuclei began to merge with each other and release huge
amounts of energy in a process known as nuclear fusion.
Fortunately, the Sun's supply of hydrogen is so great that it
will continue to shine for another five billion years. However,
the intensity of the solar radiation will increase in the future
and this will be fatal for life on Earth. As early as two to
three billion years from now, the oceans will evaporate and it
will become impossible to live on Earth. The Sun's life cycle On
approximately its ten-billionth birthday – that is, in around
five billion years from now – the hydrogen supply in the core of
the Sun will be exhausted and the generation of energy will
shift to the outer layers. As a result of this change, the Sun
will expand and become a