The eroding ozone layer of the earth would be replenished using a constellation of space-based lasers that would bombard the stratosphere at 30 km alittude for 30 years. The Energia launch vehicle would launch 30 to 40 satellites, each with a mass of 60 to 80 tonnes, into a sun synchronous orbit at an altitude of 450 km. They would use on-board ion engines to move to operational orbits at 1600 km altitude. Each spacecraft would consist of:

• 600 m diameter solar collector
• 35 MWt oxygen-iodine laser of continuous function
• Equipment module with ion orbit correction engine

• 21 - Semenov, Yuri P Editor, Raketno-kosmicheskaya korporatsiya 'Energia' imeni S P Koroleva, Moscow, Russia, 1996.