What happens when 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.
What do you think will happen once the Sun uses all of its energy 4.6 billion years from now?
This lifespan began roughly 4.6 billion years ago, and will continue for about another 4.5 – 5.5 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.
What happens if the Sun becomes a white dwarf?
With its thermonuclear fuel gone, the sun will no longer be able to shine. The immensely high pressures and temperatures in its interior will slacken. The sun will shrink down to become a dying ember of a star, known as a white dwarf, only a little larger than Earth.
What happens to helium in Sun?
What happens to the Helium? Most stars, after converting a significant portion of their hydrogen to helium undergo an internal change. After the red giant phase, the Sun will lose its outer layers leaving behind its helium-rich core (called white dwarf), which will gradually cool over the lifetime of the Universe.
What will happen to life on Earth when the Sun dies?
Life on the planet will run into trouble well before the planet itself disintegrates. Even before the sun finishes burning hydrogen, it will have changed from its present state. The sun has been increasing its brightness by about 10\% every billion years it spends burning hydrogen.
When will the Earth become uninhabitable from the Sun?
But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will become hot enough to boil our oceans. The sun is currently classified as a “main sequence” star. This means that it is in the most stable part of its life, converting the hydrogen present in its core into helium.
What will happen to Earth when the sun burns hydrogen?
Earth’s fiery demise. Even before the sun finishes burning hydrogen, it will have changed from its present state. The sun has been increasing its brightness by about 10\% every billion years it spends burning hydrogen. Increased brightness means an increase in the amount of heat our planet receives.
What will our Sun look like five billion years from now?
Five billion years from now, our own sun will look like this, when it goes through the planetary nebula stage of star death. Image via WIYN/NOAO/NSF/ University of Manchester. What does death mean, for the sun? It means our sun will run out of fuel in its interior.