Helios 1 is a solar observation satellite launched by NASA on May 10, 1974. It was part of a joint mission with Germany to study the Sun's outer atmosphere and solar wind. The satellite provided valuable data about solar activity and its effects on the Earth's environment. The mission lasted until 1985, during which Helios 1 made significant contributions to our understanding of solar phenomena. It helped scientists learn more about solar flares, coronal mass ejections, and their impact on space weather, which is crucial for protecting satellites and astronauts in space.