- Josh Kirby (Wikipedia)
Ronald William “Josh” Kirby (27 November 1928 – 23 October 2001) was a British commercial artist. Over a career spanning 60 years, he was the artist for the covers of many science fiction books including Terry Pratchett’s Discworld novels.
- Globular cluster (Wikipedia)
A globular cluster is a spheroidal conglomeration of stars that is bound together by gravity, with a higher concentration of stars towards their centers. They can contain anywhere from tens of thousands to many millions of member stars, all orbiting in a stable, compact formation. Globular clusters are similar in form to dwarf spheroidal galaxies, and the distinction between the two is not always clear. Their name is derived from Latin globulus (small sphere). Globular clusters are occasionally known simply as “globulars”.