[dread78645]

Bogus.

Hardly.

Local and Global Helioseismology: The Present and Future

[edsheppa]

The Sun has a solid iron layer a few thousand km below a neon photosphere? Lessee, iron and iron alloys melt at less than 2K C but the Sun's surface is over 6K C. We can directly observe the outer parts of the Sun spectroscopically and it is not principally composed of neon.

Yes, it is bogus. I note with wry amusement that your linked PDF in turn links to http://www.ballofiron.com/ which has a "censored" graphic just above a link to a discussion with several hundred posts. Some people just get off on that victim-of-persecution thing.