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
Mover of the Earth, Stopper of the Sun Mover of the Earth, Stopper of the Sun Mover of the Earth, Stopper of the Sun is a concert overture for large orchestra that was commissioned by Orchestre national d'Île-de-France (ONDIF) from composer Svitlana Azarova. The composition is dedicated to Renaissance astronomer Nicolaus Copernicus. The name of this composition was taken from the Nicolaus Copernicus Monument, Toruń which bears a Latin inscription drawn up by Alexander von Humboldt: "Nicolaus Copernicus Thorunensis, terrae motor, solis caelique stator" - "Nicolaus Copernicus of Thorun, mover of the earth, stopper of the sun and heavens" In the score Azarova graphically and musically shows Copernicus’s