The Sun

Of all the portions of the universe we see in the sky, the most spectacular is the Sun. Our very own star, the Sun is ruler of the Solar System. When it is shining, it drowns out everything else. When clouds cover the Sun, the day is gloomy. At night, when the Sun is not overhead, the sky is dark. All the world depends on the Sun. Topics include sunspots, flares, prominences, the Sun’s atmosphere, upcoming solar eclipses, and the Sun’s vital importance to life on Earth.