The launch of NASA’s twin GRAIL spacecraft

Navigation satellites, communications spacecraft, classified missions, NASA science projects and the Orbital Sciences Cygnus cargo ship destined for the International Space Station are on the United Launch Alliance manifest for the new year.

Flying for the 155th and final time, a United Launch Alliance Delta 2 rocket took off from California on Sept. 15 with NASA’s ICESat 2 satellite.

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.