How does the Sun Create Energy on a Flat Earth?

On the other forum, Unepic Globetard 2 (Science Supporter) asked a question how the Sun can create energy on the flat earth. Unfortunately, it received no answers however I am going to ask this question again on this forum because there are more users and I feel this is an important question to discuss the dynamics of the Sun on the flat earth.

As we know, the Sun converts elements to create energy for billions of years on the heliocentric model.

The spectrum of the Sun matches the spectrum of elements. To create energy within the center of the core, it would require extreme pressures, which is only possible with gravity.

How does the Sun Create Energy on a Flat Earth?

Btw the sun is creating energy by mass to energy conversion by fusion of 2H to He.

Interestingly Jupiter has nearly the same elemental composition as the sun but is "too small" to get enought pressure for fusion.

Sorry for posting in Q and A, but it's my major so I couldn't resist.

The spectrum of the Sun matches the spectrum of elements.

Only if the Sun is strictly gaseous, spectroscopy's fun like that. An illuminated solid body emits a continuous spectrum, no matter the material it's made from; that's how we can use spectroscopy to determine the elements around such an object by looking at the emission lines without spending a whole other paper trying to work out what the light source is composed of. For a gaseous light source the gas composing it creates emission spectra, for a solid light source the gas surrounding it gives the spectra. The spectrum of the Sun can't be used to argue that it's composed of those elements unless you've demonstrated it has to be wholly gaseous. A FEer could just reply that it is a solid body and those elements are just present at some point between the Sun and us.

Offhand I couldn't tell you precise mechanisms for illumination under generic FE models, though that's mostly because the atypical models are more memorable for me. Davis's non-Euclidean model allows for a Sun of the same composition and size with gravity, JRowe's relies on friction thanks to an interesting mdoel of space, Sandokhan's is based on fundamentally different physics...

Btw the sun is creating energy by mass to energy conversion by fusion of 2H to He.

Interestingly Jupiter has nearly the same elemental composition as the sun but is "too small" to get enough pressure for fusion.

Sorry for posting in Q and A, but it's my major so I couldn't resist.

I don't have any reference yet, but I believe that many subscribe to a theory that the Sun is not the source of the earth's energy.
Sceptimatic, in particular, claims that what we see is just a reflection in the Dome of a "sun" inside a mountain at the North Pole and it derives its energy from "the heat of the earth".

Better seeing than being told