Future of Earth the ozone layer that protects the surface from ultraviolet (UV) radiation from the Sun. An increase in UV-B radiation of only 10–30% is sufficient to cause a significant impact to life; particularly to the phytoplankton that form the base of the oceanic food chain. A supernova explosion at a distance of 26 light years will reduce the ozone column density by half. On average, a supernova explosion occurs within 32 light years once every few hundred million years, resulting in a depletion of the ozone layer lasting several centuries. Over the next two billion years, there will be about 20
The Mask of the Sun simple animations. "Softline" in 1983 noted the "innovative" animation and "excellent, detailed" graphics, and called the puzzles "very good". The magazine concluding that ""The Mask of the Sun" is a very good graphics adventure for the average to good adventurer". "Ahoy!" in 1984 liked "Mask of the Sun"s graphics and vocabulary but noted long load times and low level of difficulty, stating that even novice adventurers would be able to finish the game "within a couple of weeks". "Antic" called "Mask of the Sun"s graphics "absolutely superb" and the gameplay as "excellent". A sequel to The Mask of the Sun