On this day, in 1995, the SOHO (SOlar and Heliospheric Observatory) was launched, the result of a cooperation between the European Space Agency (ESA) and NASA. The data collected by SOHO's scientific instruments is allowing a comprehensive study of the Sun, from its deep core to the outer corona, the solar wind, and the impact of the Sun on space weather, essential for the safe operation of projects like the International Space Station.