Is The Sun A Ball Of Fire Or Gas?

Sun Ignition

What is the Sun? Some people say it’s a giant ball of fire, but this isn’t true. It is a metaphor. The Sun is the nuclear furnace, but what you believe with science is not important. Could the Sun be a ball of fire, something burning out in space? What fire is?

Fire combines with oxygen in the air, a process that calls combustion. It produces heat and light. There’s no air and oxygen in the sun. The Sun fuses and takes some hydrogen atoms and turns them into helium atoms spitting out the extra energy. It is a big ball of gas and plasma.

Is the Sun a ball of fire?

In the 1890s, the discovery of atomic processes like radioactivity was discovered by Madame Curie and others in the early 20th century. They realized the Sun was a nuclear furnace. It isn’t burning with a chemical process like combustion at all.

The Sun combines two hydrogen atoms into an atom of helium and gets off light and energy. The core in the very center is very similar to a nuclear reactor. All of these particles get squashed together, and there’s a massive amount of pressure. Also, they undergo chemical reactions. So there are very different layers towards the edge of the sun.

What is the difference between a fire in space and a fire on earth? On earth, fire is under the Dominion of gravity. Think of a candle as the fire consumes the oxygen and heats the air. The hotter air rises, and the heavier, cooler unburned air sinks, replenishing the fire fuel.

In space, this cycle doesn’t happen. There’s no such thing as lighter or heavier air in microgravity. Thus, the fire heats the air around the flame, causing it to burn slowly more of a smoke. It also means the flame burns equally in all directions, forming a globe instead of flickering.

Flames in space can burn more slowly, more coolly, and with less oxygen because of this fire in space, given the right conditions. It can expand in any direction as quickly as it can give us to the nearby oxygen. The heat doesn’t cause any rushing air, shockwaves, or anything like Earth. The flame extinguishment experiment or flex experiments were designed to explore how fire behaves in microgravity.

Sun ignited its solar furnace about 4.5 billion years ago, and it has enough fuel to keep burning for another 4-5 billion years. Nuclear fire won’t go out, and the Sun is the source of all energy on earth. The sunshine powers all photosynthesis that makes every plant on earth grow. Everything in the food web is powered by the Sun, created by the Sun.

  • So, The sun can’t be a ball of fire because there’s no oxygen in space.

It generates light but also a tremendous amount of energy. It sends all of this material to us here on Earth, and so we live in the extended atmosphere of the sun. The heat shield has to remain pointed towards the sun at all times. So the front of the heat shield will get to about 2,500 degrees Fahrenheit. But the main body of the spacecraft is nice and cool at about 80 degrees Fahrenheit.

The sun has a magnetic field, and that is continually moving away. The Parker Solar Probe found this magnetic field reverses and makes an “S” shape. Astronomers call that a switchback. It’s hard to twist a magnetic field. It’s like trying to twist a rubber hose! Somehow, this energy goes into the magnetic field, causing this “S” shape. It lets all of this excess energy out into the solar wind when it releases.


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Sources:

Pitjeva, E. V.; Standish, E. M. “Proposals for the masses of the three largest asteroids, the Moon–Earth-mass ratio and the Astronomical Unit.”
Williams, D.R. “Sun Fact Sheet.” NASA Goddard Space Flight Center.
Zombeck, Martin. Handbook of Space Astronomy and Astrophysics 2nd edition. Cambridge University Press.
Asplund, M.; Grevesse, N.; Sauval. “The new solar abundances – Part I: the observations.” Communications in Asteroseismology.

Julia Rose

My name is Julia Rose. I'm a registered clinical therapist, researcher, and coach. I'm the author of this blog. There are also two authors: Dr. Monica Ciagne, a registered psychologist and motivational coach, and Douglas Jones, a university lecturer & science researcher. I would love to hear your opinion, question, suggestions, please let me know. We will try to help you.

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