Knowledge / Space Science & Astronomy

The Sun and Solar Physics

Solar structure, nuclear fusion, magnetic activity, the solar atmosphere, and heliophysics.

By Siddhant Krishna · Published 2026-10-06 · Updated 2026-10-06

Solar Energy

The Sun's energy ultimately originates from nuclear fusion in its interior, where hydrogen nuclei participate in reactions that produce helium and release energy.

Solar Structure

Core.
Radiative zone.
Convective zone.
Photosphere.
Chromosphere.
Corona.

Solar Activity

The Sun's magnetic field produces sunspots, flares, coronal mass ejections, prominences, and other dynamic phenomena.

References

NASA science resources covering astrophysics, Earth science, heliophysics, planetary science, and exploration.
https://science.nasa.gov/
European Space Agency scientific missions and research across astronomy, planetary science, and space physics.
https://www.esa.int/Science_Exploration/Space_Science

Stars and Stellar EvolutionThe formation, structure, evolution, and final states of stars.Space WeatherVariable conditions in near-Earth and interplanetary space driven largely by solar activity.

Solar Energy

Solar Structure

Solar Activity

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