The launch of NASA’s twin GRAIL spacecraft

NOAA’s new JPSS 1 weather satellite deployed from its Delta 2 launcher in an orbit more than 500 miles above Earth nearly one hour after blasting off from California.

United Launch Alliance’s final Delta 2 rocket is now on display at the Kennedy Space Center Visitor Complex in Florida, a monument to an industry workhorse that helped build the GPS navigation satellite fleet and enabled a new era of Mars exploration.

United Launch Alliance called off the launch of a Delta 2 rocket from California’s Central Coast early Tuesday after boats ventured into a restricted safety exclusion zone and engineers ran out of time to resolve a technical problem on the launcher.