International Space Station Postcard

The International Space Station (ISS) is one of the most ambitious and remarkable engineering feats in human history. A collaborative effort involving NASA, Roscosmos, ESA, JAXA, and CSA, the ISS orbits Earth at an altitude of approximately 400 kilometres (260 miles), travelling at a speed of about 28,000 km/h (17,500 mph). Since its first module was launched in 1998, the station has served as a microgravity and space environment research laboratory, where astronauts conduct experiments in fields such as biology, physics, astronomy, and materials science. These studies contribute to scientific advancements on Earth and pave the way for future space exploration, including missions to Mars and beyond. The ISS is also a symbol of international cooperation, bringing together nations in a shared pursuit of knowledge and technological innovation. Living on the ISS presents unique challenges and experiences for astronauts. The station features multiple pressurised modules where they eat, sleep, and work in a weightless environment. Exercise is a crucial part of daily life to counteract the effects of muscle and bone loss in microgravity. Astronauts also conduct spacewalks to maintain and upgrade the station’s exterior, while advanced robotic systems, like the Canadarm2, assist with docking and repairs. The ISS serves as a testbed for new technologies, including water recycling systems and 3D printing in space. With commercial companies like SpaceX and Boeing playing an increasing role in space travel, the future of the ISS is evolving, potentially transitioning into a hub for private research and deep-space exploration. Despite its eventual retirement, the ISS will leave a lasting legacy as a cornerstone of human spaceflight and scientific discovery.