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

The first of up to seven missions planned on United Launch Alliance’s Atlas and Delta rocket fleets this year is scheduled for Saturday from California’s Central Coast, when a Delta 4-Heavy is set for blastoff on a spy satellite delivery flight delayed a month to troubleshoot a hydrogen fuel leak in a booster.

The Cassini spacecraft captured a captivating image of wispy methane clouds suspended above Titan’s hydrocarbon lakes as the probe headed for its third shot through Saturn’s ring gap Tuesday.

A United Launch Atlas 5 rocket is set to launch the U.S. Air Force’s fifth Advanced Extremely High Frequency communications satellite from Cape Canaveral. This timeline shows the major mission events planned over a nearly six-hour flight to an optimized geostationary transfer orbit.