Vanadium 50 said:The sun does move. But in a sun-centered coordinate system it is, by definition, stationary.
The sun appears to move across the sky because of Earth's rotation, but in reality, the sun is stationary and it is the Earth that is rotating on its axis. This rotation creates the illusion of the sun's movement.
As Earth rotates on its axis, different parts of the planet are exposed to the sun's light, creating day and night. This is why the sun appears to rise in the east and set in the west from our perspective on Earth.
The sun's apparent movement throughout the day is due to Earth's rotation combined with its orbit around the sun. As Earth continues to rotate, our perspective of the sun's position changes, making it appear to move across the sky.
While the sun appears to move in the sky, it is actually the Earth's movement that creates this illusion. The sun is the center of our solar system and remains stationary in relation to the other planets.
If the sun were to physically move in space, it would have a significant impact on our entire solar system. The orbits of the planets would be disrupted, and life on Earth would be drastically affected due to changes in temperature and light. However, the sun is expected to remain stationary for billions of years to come.