The Sun is the star at the center of our solar system. It is a giant ball of hot plasma, and it accounts for about 99% of the mass of the solar system. The Sun’s gravity holds the solar system together, and it provides the light and heat that make life on Earth possible.

The Sun is about 4.6 billion years old, and it is still burning hydrogen fuel. When the hydrogen fuel runs out, the Sun will start to burn helium fuel. This will cause the Sun to expand and become a red giant. Eventually, the Sun will collapse and become a white dwarf.

The Sun is a very important part of our solar system. It provides the light and heat that we need to survive, and it also affects the climate of Earth. The Sun’s gravity also helps to keep the planets in their orbits.