How much hydrogen is converted to helium in the Sun each second?

Author

Emma Newman

Published Feb 22, 2026

How much hydrogen is converted to helium in the Sun each second?

In each nuclear conversion 4 hydrogen atoms are combined to produce a helium atom. This reaction occurs throughout the Sun and by this process our Sun converts 600 million tons of hydrogen into 596 million tons of helium every second.

Likewise, how much hydrogen does sun burn per second?

The Sun survives by burning hydrogen atoms into helium atoms in its core. In fact, it burns through 600 million tons of hydrogen every second.

Also Know, how long does it take for the sun to convert one Earth mass of hydrogen into helium? First, an initial check: what's a reasonable answer? The sun weighs about 300,000 as much as the earth, so if the time were only “1 hour” then the total lifetime of the sun would be less than 300,000 hours (about 34 years).

Regarding this, how much mass does the Sun converted to energy each second?

Let us see how much. we find that the Sun loses mass 4.289x10¹² g every second to energy. Or, in other units, the Sun loses mass 1.353x10²⁰ g every year to energy. The Sun is thought to have a remaining lifetime of about 5x10⁹ years.

How much hydrogen is in the sun?

The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.

What year will the Sun die?

The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.

How much fuel does the sun burn in 1 second?

It was given as the number of Earth masses that are converted every month or year. The Sun consumes about 600 million tons of hydrogen per second. (That's 6 x 10⁸ tons.) For comparison, the mass of the Earth is about 1.35 x 10²¹ tons.

Will Sun become a black hole?

No, our Sun is much too small to become a black hole. As it exhausts its hydrogen fuel, our Sun will start burning helium, swell in size and briefly become a red giant (giant in size, though not in mass), probably exceeding the size of the orbit of Venus.

Why is the sun on fire?

The Sun does not "burn", like we think of logs in a fire or paper burning. The Sun glows because it is a very big ball of gas, and a process called nuclear fusion is taking place in its core. Hydrogen really doesn't burn, it fuses, into helium. So no oxygen is required!

Will the sun last forever?

The hydrogen fuel at the core will finally be exhausted in five billion years, when the Sun will be 67% more luminous than at present. Thereafter the Sun will continue to burn hydrogen in a shell surrounding its core, until the luminosity reaches 121% above the present value.

What gases does the sun burn?

The Sun survives by burning hydrogen atoms into helium atoms in its core. In fact, it burns through 600 million tons of hydrogen every second. And as the Sun's core becomes saturated with this helium, it shrinks, causing nuclear fusion reactions to speed up - which means that the Sun spits out more energy.

Is the sun shrinking?

The Sun actually does lose mass in the process of producing energy. Let us see how much. we find that the Sun loses mass 4.289x10¹² g every second to energy. Or, in other units, the Sun loses mass 1.353x10²⁰ g every year to energy.

Will the sun ever burnout?

The hydrogen fuel at the core will finally be exhausted in five billion years, when the Sun will be 67% more luminous than at present. Thereafter the Sun will continue to burn hydrogen in a shell surrounding its core, until the luminosity reaches 121% above the present value.

Is the sun shrinking or getting bigger?

The sun is growing. And shrinking, and growing again. Every 11 years, the sun's radius oscillates by up to two kilometres, shrinking when its magnetic activity is high and expanding again as the activity decreases. We already know that the sun is not a static object.

Does sunlight add mass to Earth?

Since 1 gram is worth 9 x 10^20 ergs, sunlight equals 4 x 10^12 grams/second or 4.4 million metric tons of equivalent mass per second . During the entire life of the sun4.5 billion years, the earth has gained 2.7 x 10^17 kilograms, which is only 1/21 millionth of its mass.

What is E mc2 used for?

Einstein's greatest equation, E = mc², is a triumph of the power and simplicity of fundamental physics. Matter has an inherent amount of energy to it, mass can be converted (under the right conditions) to pure energy, and energy can be used to create massive objects that did not exist previously.

What keeps the sun from blowing apart?

And the Sun is huge so you have all this gravitational pressure pushing downwards. And so you've got gravity pushing down and the Sun trying to blow itself apart from the inside. And it is this beautiful balancing act between the two that keeps the Sun in one piece.

How much mass is lost when helium is formed?

The total mass of four hydrogen nuclei is 6.693 x 10^-²⁷ kilograms. The mass of a helium nucleus is 6.645 x 10^-²⁷ kilograms. Thus, there is a loss of 0.048 x 10^-²⁷ kilograms every time a helium nucleus is formed by fusion.

Does the sun change size?

The surface of the sun undergoes violent changes on a dailybasis, but a group of astronomers has found that the size of our nearest starhas been perplexingly constant in recent years. The new study shows that the sun's diameter has changed byless than one part in a million over the last 12 years.

How do you calculate the lifetime of the sun?

E=(1.4*10²⁷ kg)*(3*10⁸ m/s)²=1.26*10⁴⁴ Joules. Then, to figure out how long this lifetime is, you need to kow the rate at which the Sun is losing energy. We know this from the Sun's luminosity, which is 3.78 x 10²⁶ Joules/second (a Joule is a unit of energy, see page A8).

How much mass does the sun made up of our solar system?

It holds 99.8 percent of the solar system's mass and is roughly 109 times the diameter of the Earth — about one million Earths could fit inside the sun.

Does the Sun convert hydrogen into helium?

The Sun and Nuclear Fusion. In the core of the Sun hydrogen is being converted into helium. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.

What holds the sun together?

The Sun's enormous mass is held together by gravitational attraction, producing immense pressure and temperature at its core. Specifically, in the Sun's core, hydrogen atoms fuse to make helium. The energy produced in the core powers the Sun and produces all the heat and light the Sun emits.

How much energy is produced when the sun converts 1 kg of hydrogen into helium?

Fusing one kilogram of hydrogen into helium releases 630 trillion joules of energy. That's nearly 5 million times what you'd get by burning the same hydrogen to get water. Thus, fusion of hydrogen will keep the Sun shining at a constant luminosity not for 20 thousand years, but for as much as 100 billion years.

Can Helium be made from hydrogen?

Most helium in the universe is helium-4, the vast majority of which was formed during the Big Bang. Large amounts of new helium are being created by nuclear fusion of hydrogen in stars.

What happens to helium in sun?

The Sun survives by burning hydrogen atoms into helium atoms in its core. In fact, it burns through 600 million tons of hydrogen every second. And as the Sun's core becomes saturated with this helium, it shrinks, causing nuclear fusion reactions to speed up - which means that the Sun spits out more energy.

What is the lifespan of a star?

The life of a star is determined by how large it is. Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long.

At what rate does the sun lose energy by radiation?

The Sun loses energy at rate of 3.78*10²⁶ Joules/second, and if it has 1.26*10⁴⁴ Joules of available energy, then we can divide the two to determine how long the Sun can shine: (3.78*10²⁶ Joules/second)/(1.26*10⁴⁴ Joules)=3.33*10¹⁷ seconds.

How is the sun powered?

Fusion powers stars and produces virtually all elements in a process called nucleosynthesis. The Sun is a main-sequence star, and, as such, generates its energy by nuclear fusion of hydrogen nuclei into helium.

Does the sun produce helium?

The Sun and Nuclear Fusion. In the core of the Sun hydrogen is being converted into helium. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.

Is the sun stable?

The Sun today is roughly halfway through the most stable part of its life. It has not changed dramatically for over four billion years, and will remain fairly stable for more than five billion more.

How many hydrogen bombs worth of energy is created by the sun every second?

We get the astonishingly huge amount of 400 trillion trillion watts. To put this into a crazy context, every second the sun produces the same energy as about a trillion 1 megaton bombs! In one second, our sun produces enough energy for almost 500,000 years of the current needs of our so-called civilization.

Is our sun a red giant?

The future of the sun. 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.

Is the Sun Fire or plasma?

It is, as all stars are, a hot ball of gas made up mostly of Hydrogen. The Sun is so hot that most of the gas is actually plasma, the fourth state of matter. The first state is a solid and it is the coldest state of matter. As we heat up a solid it becomes liquid.

Is the sun yellow or white?

It is a common misconception that the Sun is yellow, or orange or even red. However, the Sun is essentially all colors mixed together, which appear to our eyes as white. This is easy to see in pictures taken from space. Rainbows are light from the Sun, separated into its colors.

What makes the sun burn so hot?

What Causes the Sun to Give off Heat? The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).

Is the sun plasma?

The Earth's ionosphere is a plasma and the magnetosphere contains plasma in the Earth's surrounding space environment. The interior of the Sun is an example of fully ionized plasma, along with the solar corona and stars.

What if the sun died?

What does death mean, for the sun? It means our sun will run out of fuel in its interior. It'll cease the internal thermonuclear reactions that enable stars to shine. It'll swell into a red giant, whose outer layers will engulf Mercury and Venus and likely reach the Earth.

What is inside Sun?

The sun is a big ball of gas and plasma. Most of the gas — 91 percent — is hydrogen. It is converted into energy in the sun's core. The energy moves outward through the interior layers, into the sun's atmosphere, and is released into the solar system as heat and light.

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