From left, Dr. Howard Levine, project specialist, and Bryan Onate, program manager, at NASA's Kennedy Space Center in Florida, discusses the Advanced Plant Habitat during a "What's on Board" science briefing to NASA Social participants at Kennedy. The briefing is for Orbital ATK's seventh commercial resupply services mission, CRS-7, to the International Space Station. Orbital ATK's Cygnus pressurized cargo module is set to launch on the United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station on April 18. Liftoff is scheduled for 11:11 a.m. EDT.