The recent achievement of a solar-powered airship, SE2, staying aloft for 12 days in the stratosphere has sparked renewed interest in this technology. While airships have long been dismissed as a relic of the past, this development showcases their potential as a cheaper and more sustainable alternative to satellites. SE2, built by startup Sceye, is not just a blimp; it's a high-altitude platform system (HAPS) or pseudo-satellite that can relay phone signals and gather data from the stratosphere. The airship's ability to stay aloft for extended periods, powered by solar energy and lithium-sulfur batteries, is a significant breakthrough. This technology could revolutionize connectivity, disaster response, and environmental monitoring, offering a cheaper and more sustainable solution than traditional satellites. However, the challenge lies in extending the airship's endurance to months and years, and in making the technology economically viable. With companies like SoftBank investing in this technology, the future of airships looks promising, but the question remains: can they truly replace satellites and become a viable alternative for space-based applications?
