ESA's JUICE mission faces tight 1-second launch window to study Jupiter's icy moons.

Europe's JUICE mission to Jupiter has only a one-second launch window each day until the end of April due to the spacecraft's long and winding route through the inner solar system, taking advantage of the gravity of the planets Venus and Earth, as well as Earth's moon, to reach its destination using the least fuel possible. The Ariane 5 rocket will launch JUICE directly into orbit around the sun, which will swing the spacecraft back by Earth in August 2024. If Ariane 5 misses all of its one-second launch windows in April, the planets will align for JUICE again later this summer.