What would happen if the sun turned into a red giant?

In approximately 5 billion years, the sun will begin the helium-burning process, turning into a red giant star. When it expands, its outer layers will consume Mercury and Venus, and reach Earth. Either way, life as we know it on Earth will cease to exist.

What will happen when the sun runs out of hydrogen?

When our Sun runs out of hydrogen fuel in the core, it will contract and heat up to a sufficient degree that helium fusion can begin. It will end composed of carbon and oxygen, with the lighter (outer) hydrogen and helium layers blown off. This occurs for all stars between about 40\% and 800\% the Sun’s mass.

Will the sun turn into a white dwarf?

Like the vast majority of stars in our Milky Way galaxy, the sun will eventually collapse into a white dwarf, an exotic object about 200,000 times denser than Earth. “The sun itself will become a crystal white dwarf in about 10 billion years.”

Will the sun stop burning?

Astronomers estimate that the sun has about 7 billion to 8 billion years left before it sputters out and dies. Humanity may be long gone by then, or perhaps we’ll have already colonized another planet.

Why do planets near the Sun have very little hydrogen?

The planets also have the right characteristics to have formed from a disk of mainly hydrogen around a young, hot Sun. Those planets near the Sun have very little hydrogen in them as the disk would have been too hot for it to condense when they formed.

Is the Solar System formed from a cloud of gas?

Current simulations of the formation of a solar system from a cloud of gas work quite well. Observations of the solar system itself support the theory too. In fact it was these observations which lead to the proposal of the theory in the first place. 1. All the planets orbit the Sun in the same direction.

What happened to the nebula that formed the Sun?

As the nebula collapsed because of its overwhelming gravity, it spun faster and flattened into a disk. Most of the material was pulled toward the center to form our Sun, which accounts for 99.8\% of the mass of the entire solar system. Like all stars, the Sun will someday run out of energy.

How will the Solar System change in the future?

In the long term, the greatest changes in the Solar System will come from changes in the Sun itself as it ages. As the Sun burns through its supply of hydrogen fuel, it gets hotter and burns the remaining fuel even faster. As a result, the Sun is growing brighter at a rate of ten percent every 1.1 billion years.