* Surface Temperature: White dwarfs have surface temperatures ranging from 8,000 to 40,000 Kelvin, while the Sun's surface temperature is about 5,500 Kelvin. So, white dwarfs are indeed hotter at their surface.
* Energy Output: However, white dwarfs are much smaller than the Sun, with a radius typically about the size of the Earth. This means they have a much smaller surface area and therefore emit less total energy than the Sun.
* Cooling Down: White dwarfs are the remnants of stars like our Sun that have exhausted their nuclear fuel. They are slowly cooling down over billions of years, eventually fading into black dwarfs.
Therefore, while a white dwarf's surface is hotter than the Sun's surface, it produces significantly less total energy and is not hotter overall.
Think of it like this: Imagine a tiny, super-heated poker compared to a giant campfire. The poker's surface might be hotter, but the campfire produces far more heat overall.
