Although the Sun and Moon may appear to be similar from a distance, the two are actually very different.
The Sun is a large ball of gas that is full of energy and heat. Seventy-three percent of the Sun is made of hydrogen, while 25 percent of it is helium. The remaining two percent is made up of traces of approximately 60 other elements.
The Sun’s energy comes from the nuclear reaction of elements in its core, which makes the core warm. In fact, the temperature of the core can reach up to 27 million degrees Fahrenheit. Additionally, the Sun's surface is filled with sun spots and boiling bubbles of gas that sometimes erupt into prominences, which shoot hot gas into space.
Every once in a while, the Sun and Moon interact. For example, a solar eclipse happens when the Moon passes between the Earth and the Sun; this lasts for about two hours on average. In contrast, a partial eclipse happens when part of the Sun is covered, and a total eclipse occurs when the Sun is covered completely.
The sun’s energy and heat reach the Earth and provide all living beings here with warmth and light. That’s why it’s important to learn about the Sun and Moon—because even from afar, they influence us in many ways.
[Source: Google Encyclopedia]