There are websites that predict solar weather, or essentially the impact of the solar wind on earth. How is this possible when the speed of light is a fixed quantity?
◦ The solar forecast is like weather forecasting on Earth; solar scientists observe phenomena as they form and grow on the sun, and predict their timing.
◦ The solar weather effect on Earth depends largely on the earth's magnetic field and its interaction with Earth weather, so scientists predict variations in both.
◦ The solar wind does not travel at the speed of light, so it arrives much later than when a solar event is observed.
◦ The solar weather is related to sunspots, and they only affect Earth when the sunspots are in line with the earth, so knowing the solar rotation speed, you can predict when sunspots are aimed at Earth.
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