March 27, 2009
The Sun is Hotter Than Hot!
The Sun's temperature varies over time and throughout these seven layers …
The hottest part of the Sun is the core, at 28,080,000°F, on average.
The second layer becomes cooler and is where photon particles carry energy in all directions through a process called radiation.
A thin third layer, the tachocline acts as a border between two differently rotating zones.
The fourth layer is a zone of boiling, bubbling plasma that transfers energy outward through a process called convection.
The fifth layer is the visible surface where sunspots appear.
The sixth layer is where the temperature begins to rise again. A thin, reddish layer, the chromosphere is seen only during eclipses or with special solar-viewing equipment.
The layer between the hot corona and cooler chromosphere
The eighth and outer layer of the Sun gets extremely hot, measuring 1,800,000°F more. This layer extends far into space and is shaped by the Sun's magnetic field, is visible only during eclipses or with special equipment.
Now that's hot!
The Old Farmer's Almanac for Kids, Volume 2