Watch a video replay of NASA’s exoplanet announcement

Ground controllers pressurized the Juno spacecraft’s propulsion system Tuesday to prep for a July 4 rocket firing by the probe’s UK-made rocket engine that will steer the spinning, solar-powered robot into orbit around Jupiter.

NASA’s Perseverance rover released the Ingenuity helicopter onto the surface of Mars Saturday, leaving behind the experimental flying drone to survive on its own power until attempting a historic hop in the Red Planet’s thin carbon dioxide atmosphere around April 11.

A pair of European-built, NASA-backed research satellites set for launch Tuesday from California will extend 15 years of global gravity field measurements collected by the GRACE mission before it ended last year, supplying scientists with data to help track the melting of Earth’s ice sheets and chart the impacts of floods and droughts.