Like all stars the sun was born in a cloud of gas and dust about 4.6 billion years ago.At the end the sun’s life, it will become a white dwarf. A white dwarf is a star that is small and not very bright.They are so small that we can't see them unless you look in a telescope.Did you know that if you weighed 100 on earth you would weigh 1,000 pounds on a white dwarf? After it becomes a white dwarf, it will turn into a black hole. Black holes suck in anything that comes close to it. Astronauts are not afraid of black holes because black hole are so far away.
This flow chart explains the life cycle of the sun.