How old will the Sun be when it dies? But in about 5 billion years, the sun will run out of hydrogen.
How old is the Earth’s Sun? How the sun formed. The sun was born about 4.6 billion years ago. Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula.
Why is the Sun 4.5 billion years old? The Sun formed 4.5 billion years ago from a cloud of gas and dust that collapsed when a shockwave from a nearby supernova explosion struck it. Over millennia, so much mass aggregated that pressure and heat at its core that nuclear fusion reactions ignited and produced energy.
Is Earth or Sun older? The sun, at 4.6 billion years old, predates all the other bodies in our solar system. But it turns out that much of the water we swim in and drink here on Earth is even older.