Modern spacecraft typically use multi-junction solar cell and gallium arsenide -based panels. Photovoltaic solar panels are the power source for almost all spacecraft ever launched. These solar cells, however, themselves require protection from radiation, which is delivered by solar cell cover glass. Space is one of the most demanding environments that. From providing a clean energy source for terrestrial applications to powering satellites orbiting Earth and sustaining life on extraterrestrial bases, photovoltaic (PV) technologies are at the forefront of enabling extended space missions and deep space exploration, and sustainable power generation. Space-based solar power (SBSP or SSP) is the concept of collecting solar power in outer space with solar power satellites (SPS) and distributing it to Earth. Its advantages include a higher collection of energy due to the lack of reflection and absorption by the atmosphere, the possibility of very. Utilizing SBSP entails in-space collection of solar energy, transmission of that energy to one or more stations on Earth, conversion to electricity, and delivery to the grid or to batteries for storage.