Q&A with Scott Bolton, principal investigator on NASA’s Juno mission

Scientists examining data from the Cassini mission’s final months reported this week unexpected measurements of Saturn’s gravity field and outer atmosphere, suggesting they may have to revisit theories about the planet’s rings and the forces that generate magnetic fields.

Relive all of the steps to stack the United Launch Alliance Atlas 5 rocket at Cape Canaveral’s Vertical Integration Facility for the Morelos 3 satellite deployment mission.

Japan’s robotic Hayabusa 2 spacecraft arrived Wednesday at asteroid Ryugu, a diamond-shaped object more than a half-mile wide where the probe will attempt a brief landing later this year to collect rock specimens for return to Earth.