Figure 16-1: R I V U X G
The Sun The Sun’s visible surface has a temperature of about 5800 K. At this temperature, all solids and liquids vaporize to form gases. It was only in the twentieth century that scientists discovered what has kept the Sun so hot for billions of years—the thermonuclear fusion of hydrogen nuclei in the Sun’s core.
The Sun The Sun’s visible surface has a temperature of about 5800 K. At this temperature, all solids and liquids vaporize to form gases. It was only in the twentieth century that scientists discovered what has kept the Sun so hot for billions of years—the thermonuclear fusion of hydrogen nuclei in the Sun’s core.
(Jeremy Woodhouse/PhotoDisc)