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
Captain Video: Master of the Stratosphere 1960, and 1963). Harmon and Glut describe this serial as a "rather shoddy, low budget space cliffhanger." The serial includes several science fiction gadgets of the era. The Opticon Scillometer was used for looking through walls. Objects were made to disappear with the Isotropic Radiation Curtain. The Mu-ray Camera could photograph lingering images after the event. Temporary madness could be caused with the Psychosomatic Weapon. A variation on Radar was entitled the Radionic Directional Beam and the Radionic Guide and a Vibrator gun that worked like a Tazer. Captain Video: Master of the Stratosphere Captain Video: Master of the Stratosphere