Paragraph 2
The Sun is 4.6 billion years
. It is only one third into its
. A professor said when a
dies, it throws gas and
into space. This reveals the star's
. At this
, it is running out of fuel. The star turns off and dies. The professor was
that he could work out many things about
. He said we can work out what
are in distant galaxies. He said: "We have even found out what the Sun will do
it dies".
