South Korea launched its homegrown Nuri rocket Wednesday on its fifth flight to place 15 satellites into orbit, including five that will form part of the country's first domestically launched microsatellite constellation. The 200-ton Nuri blasted off from the Naro Space Center in Goheung, about 400 kilometers southwest of Seoul, at 12:25 p.m. The payload consists of five New-space Earth Observation Satellite Constellation for National Safety (NEONSAT) microsatellites and 10 CubeSats. Nuri's first and second stages will separate about 123 and 268 seconds after liftoff, respectively, with satellite deployment beginning between 810 and 960 seconds at an altitude of around 575 kilometers. The five NEONSATs, Nos. 2 through 6, will be deployed at intervals of 35 to 40 seconds, with Nuri's upper stage rotating by about 45 degrees between each separation to prevent collisions. The 10 CubeSats will then be deployed two at a time at 10-second intervals. After releasing all 15 satellites, Nuri will perform a collision-avoidance maneuver and vent its remaining fuel, completing its flight about 20 min