Unformatted text preview: Corona is much much hotter than the chromosphere due to spicules Coronal holes: energy and gas flowing out. Solar wind Sun is losing millions of tons every second, but relatively speaking this is nothing. In its entire existence, it’s only lost .1% of its mass (halfway through its life) The Active Sun Sunspots: middle = umbra, 4500 K. region around that is penumbra = 5500 K. beyond that is photosphere, 5800 K Last from 1 – 100 days...
View Full Document
This note was uploaded on 09/24/2009 for the course ASTR 101 taught by Professor Christiansen during the Fall '08 term at UNC.
- Fall '08