Our sun is a magnificent, life-giving force. While itâ€™s only considered a medium star by universal standards, thanks to our proximity to it, the sun supplies us with heat and light. It is the most basic source of energy for planet Earth; without it, neither people nor any other species would be able to survive. The sun is 1.3 million times larger than Earth. Because the sun is so big, it also produces a lot of gravity. The sunâ€™s strong gravitational pull is what keeps Earth and the other planets in our solar system in orbit. Without the heat and light of the sun, life as we know it could not exist on the earth. Since solar energy is used by green plants in the process of photosynthesis, the sun is the ultimate source of the energy stored both in food and fossil fuels. Solar heating sets up convection currents, and thus is the source of the energy of moving air. Falling rain also owes its energy to the sun because of the relation of solar radiation to the water cycle. In conclusion itâ€™s important and fundamental to the Earth as it provides the Earth with energy which enables electricity and sunlight which helps plants grow and lightens the Earth.