Gallery: Antares rocket explodes

Fifteen CubeSats owned by NASA, Spire Global, and U.S. research institutions launched aboard a Northrop Grumman Cygnus cargo ship in May have been released into orbit, beginning missions to demonstrate miniaturized, low-cost Earth science instruments and join a commercial network of weather-monitoring nanosatellites.

An Orbital ATK investigation into last year’s Antares rocket crash in Virginia identified a decades-old manufacturing defect inside an AJ26 engine turbopump as the most likely cause of the failure, but a team of NASA engineers was not so sure in their report.

The next Cygnus resupply mission to the International Space Station set for liftoff Wednesday from Virginia’s Eastern Shore will introduce new capabilities for the commercial cargo freighter, including a longer operating life enabled by fuel-saving gyroscopes to support an extended mission months after the spacecraft departs the International Space Station, Northrop Grumman officials said.