Replying to Avatar x92vbb

No, the sun is mostly of hydrogen.

That the light needs >100,000 years to pass a certain inner area doesnt mean that the radius of this inner area is >100,000 lightyears.

The light just travels incredibly slow due to the sun's "gravity", while a lightyear as a distance unit refers to the speed of light in a vacuum.
Avatar
senf 10mo ago

It doesn't take that long because of gravity, it's the path taken to the surface.

https://www.astronomy.com/science/i-heard-that-the-light-from-nuclear-fusion-reactions-in-the-suns-core-takes-about-200000-years-to-reach-its-surface-i-thought-the-speed-of-light-is-constant-why-does-it-take-so-long/

Reply to this note

Please Login to reply.

Discussion

Avatar
x92vbb 10mo ago

You're absolutely right, I might have simplified it too much ("gravity" in quotes) though the fusion which causes the radiation is at last caused by the immense gravity.

But your shared link explains it better than I could. 👍🤗