Scientists know when our Sun will die. It won't be
. It will be in 10 billion years. The
are from the UK. They say that in about 5 billion years from
, the Sun will turn into a "
giant". This is the science
for a star at the end of its life. When our Sun becomes a red giant, its
will get smaller. Its outer layers will travel as far as Mars. This means Earth will burn and disappear. After our Sun turns into a red giant, it will become a
of gas and space
will be on Earth when the Sun dies out. Humans will disappear in around one
years from now.