Stats: Atlas 5 and Delta 4 histories and backlogs (updated April 20)

Carrying more science research gear to the International Space Station than ever launched before by U.S. commercial logistics vehicles, the next Orbital ATK Cygnus freighter takes flight Tuesday.

Two key pieces of hardware needed for NASA’s next Mars rover — an Atlas rocket booster and sterile components of the rover’s sample collection system — recently arrived at Cape Canaveral ahead of the mission’s scheduled launch July 17.

SpaceX and Arianespace recently announced plans to launch rideshare missions to sun-synchronous and geostationary orbit, dedicating big rocket capacity for small satellites as the U.S.-based launch broker Spaceflight committed to using a new Indian microsatellite launcher set to debut later this year.