A SpaceX Falcon 9 rocket launched the Euclid mission for the European Space Agency. Euclid is an astrophysics mission with a telescope and two scientific instruments designed to explore the evolution of the dark universe. It will make a 3D-map of the universe by observing billions of galaxies out to 10 billion light-years, across more than a third of the sky. Euclid will be launched to an observing orbit at the Sun-Earth L2 Lagrange point. The mission was originally supposed to launch on a Russian Soyuz rocket. The Falcon 9’s first stage booster landed on a drone ship in the Atlantic Ocean.