Q&A with Mimi Aung, Mars Helicopter project manager at JPL (members only)

The Orion spacecraft slated to fly around the moon on an unpiloted mission next year has arrived back at the Kennedy Space Center following an environmental test campaign in Ohio, ready for a series of final checkouts before officials pause launch preparations this summer to await readiness of NASA’s Space Launch System.

Earl Maize, who leads the Cassini mission at NASA’s Jet Propulsion Laboratory, started working on the Saturn orbiter project in 1992. In September, the spacecraft will take an intentional plunge into Saturn’s atmosphere, gaining unprecedented up-close measurements and ending a 13-year odyssey round the ringed planet.

The core piece of NASA’s first huge Space Launch System heavy-lift rocket designed to carry astronauts back to the moon fired its main engines more than eight minutes Thursday in southern Mississippi, acing a crucial test before the it ships to the Kennedy Space Center in Florida to prepare for liftoff.