How can you possibly know that?
Come on, Man!...It’s all right there in the memo- “Trust the science!”
How Long Does It Take for Photons to Emerge From the Sun's Core to the Outside?
The core of Sol is where compressive forces are at their greatest, sufficient to produce and continuously sustain nuclear fusion. A fusion reaction that occurs at the very center of the sun produces protons that have to travel over 432,000 miles “as the crow flies” to reach the surface of the sun and race radially outward therefrom in the form of visible light. Admittedly the 500,000 year number seems unlikely but IIRC that’s how the math works out in terms of the immense density, “bouncing”, random directionality, and other mind-bending obstacles that any given photon so produced will face in its path toward freedom.