when they are BILLIONS of miles away? Always puzzled me.
(, Mon 1 Dec 2008, 11:33, Reply)
have been working on this for yonks.
This is a good place to start:
en.wikipedia.org/wiki/Stellar_structure
Basically, it's a load of extrapolation about whats going inside the sun - it's occassionally probed with x-rays etc:
soho.esac.esa.int/
/serious nerd answer over
(, Mon 1 Dec 2008, 11:59, Reply)
a whole lot from the light spectrum of a star, it's relative brightness, how far away it is, and what else is nearby.
That withstanding, it's still completely mid boggling that they can do it anyway.
(, Mon 1 Dec 2008, 11:59, Reply)
Thankfully there's one a lot nearer!
(, Mon 1 Dec 2008, 12:41, Reply)