Q&A with Earl Maize, Cassini project manager (members only)

Dante Lauretta, a researcher based at the University of Arizona, leads the science team on NASA’s OSIRIS-REx mission scheduled for launch Sept. 8 on a round-trip journey to asteroid Bennu.

Teams at Stennis Space Center in Mississippi removed the core of NASA’s first Space Launch System heavy-lift rocket from a test stand earlier this week for loading onto a barge to carry it to Kennedy Space Center in Florida, where the rocket stage is due to arrive by the end of the month to start final preparations for a test flight around the Moon.

Europe’s ExoMars rover will not be ready for launch in 2018, officials said Monday, forcing a two-year delay for the ambitious mission to drill into the Martian surface and search for the remnants of past life.