


The Plasma Universe 2008 calendar features a dozen awe-inspiring images of the cosmos, in which plasma plays an important role.
Both educational and artistic, the calendar will satisfy the experienced astronomer to the youngest of students.
The calendar runs 14 months from Dec 2007 to Jan 2009 inclusive.
A very rare phenomenon known as a ‘blue sun.’ These have been observed from time to time around the world. The most recent widely accepted documentation of a blue sun occurred in September 1950 in Edinburgh, Scotland. A discussion of that event appears in Craig Bohren’s book, ‘Clouds in a Glass of Beer,’ on page 91.(via haha.nu)