* No direct measurement: We can't send a probe to the Sun's core. The intense heat and pressure would destroy any instrument.
* Temperature is a statistical concept: Temperature measures the average kinetic energy of particles. At the Sun's core, particles are moving at incredibly high speeds and colliding constantly. It's more accurate to say that the Sun's core has a huge amount of energy, rather than a specific temperature in degrees.
Instead of a specific temperature, scientists use the following estimates:
* Estimated core temperature: Around 15 million degrees Celsius (27 million degrees Fahrenheit). This is based on models of the Sun's internal structure and energy production.
* Energy density: The core has a much higher energy density than the surface.
So, while we can't measure the temperature in degrees, we know the Sun's core is incredibly hot and contains vast amounts of energy.
