Question

How does energy generated in the solar core eventually reach earth?

Answer 1

Hint:The Sun's core is known to stretch to around 0.2 to 0.25 solar radius from the center. This is the hottest region of the Sun and the Solar System.

Complete answer:
The core is the only component of the sun that by fusion produces an appreciable amount of heat. In fact, within 24 miles of the sun's radius, 99 percent of the energy generated by the sun takes place. Fusion has almost completely ceased at 30 percent of the radius. The remainder of the sun is heated as sunlight or the kinetic energy of photons by the energy that is transported from the centre by the successive layers, finally touching the solar photosphere and fleeing into space.
The mechanism of nuclear fusion produces an amazing amount of energy in the form of light and heat. But it takes a few important steps to bring the energy from the core of our sun all the way out to the Earth and beyond. It all comes down to the layers of the sun, in the end, and the role each of them plays in ensuring that solar energy gets to where it can help produce and maintain life.
The net outcome is the merger into one alpha particle with four protons (hydrogen nuclei)-two protons and two neutrons fused together into a particle similar to a helium nucleus. Two positrons, as well as two neutrinos (which transform two of the protons into neutrons) and energy are released from this process.

In the heat transfer process from the centre to the photosphere, each gamma photon in the core of the Sun is transformed into several million visible light photons during dispersion before escaping into space. The fusion reactions in the centre often emit neutrinos, although they interfere with matter only rarely, unlike photons, so nearly all will instantly escape the Light.
Measurements of the number of neutrinos produced in the Sun have been much smaller for several years than theorists expected, a problem that was recently solved by a clearer understanding of neutrino oscillation.

Note:The sunlight here on Earth is at the core of biological and chemical processes. The life cycle of plants and animals would end without it, the circadian cycles of all earthly beings would be interrupted, and all life on Earth would cease to exist in time. Since ancient times, the sun's significance has been recognised, with many civilizations seeing it as a goddess.