How hot is the Sun?
Different parts of the Sun have different temperatures. In the center, the core of the Sun is around 15,000,000°C (27,000,000°F).
Most of the "surface" of the Sun (AKA the photosphere) is a lot cooler—around 5,500°C (10,000°F). Sunspots can be a little less hot, around 4,000°C (7,300°F).
As you move away from the surface, the chromosphere is around 4,300°C (7,800°F).
Interestingly, even further out in the corona, the temperature goes right back up to between 1,000,000°C (1,700,000°F) and a whopping 17,000,000°C (10,000,000°F). We don't know exactly why it's so out this far away from the surface of the Sun—it's one of the things scientists are still trying to figure out.
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