Scientists say our Sun will die in 10 billion years. In about 5 billion years, it will turn into a "red giant". This is when a star is at the end of its life. Its centre will get smaller and its outer layers will reach Mars. This means Earth will burn and disappear. Humans will disappear in one billion years from now.

A professor said when a star dies, it throws gas and dust into space. After this, it runs out of fuel. Then, the star dies. The professor was happy that he could find out many things about space. He said he worked out what stars are in distant galaxies. He said: "We have even found out what the Sun will do when it dies".