How old is the sun?

The sun is approximately 4.57 billion years old.

The sun is the central object of the solar system and accounts for 99.86% of the total mass of the solar system. The eight major planets, asteroids, meteors, comets, trans-Neptunian objects, and interstellar dust in the solar system all orbit the sun, and the sun orbits the center of the Milky Way.

The sun is the star located at the center of the solar system. It is almost an ideal sphere where hot plasma and magnetic fields are intertwined. The diameter of the sun is approximately 1,392,000 (1.392 × 10?) kilometers, which is equivalent to 109 times the diameter of the Earth; its volume is approximately 1.3 million times that of the Earth; and its mass is approximately 2 × 10? kilograms (330,000 times that of the Earth).

Extended information:

The sun orbits the center of the Milky Way with a period of about 2.5×10? years. There may be a huge black hole at the center of the Milky Way, but it is surrounded by stars, so it looks like a "galactic disk." These stars orbit around the "galactic core". Unlike the Earth's revolution, these stars will get closer to the "galactic core" every time they orbit.

The sun, like other celestial bodies, also rotates around its own axis from west to east, but observations and research have shown that the rotation speed is different at different latitudes on the sun's surface. At the equator, it takes 25.4 days for the sun to rotate once, while at latitude 40 it takes 27.2 days. At the poles, it takes about 35 days to rotate once. This type of rotation is called "poor rotation".

Reference: Baidu Encyclopedia - The Sun