South Korea plans to conduct its first launch of a commercial-grade satellite aboard a domestically built rocket next month as part of its space development program, officials said Tuesday. In June last year, South Korea conducted its first satellite launch using the Nuri rocket. That launch involved what South Korean officials called a “performance verification” satellite mainly designed to examine the capacity of the rocket while next month’s event is meant to put a commercial-grade satellite into orbit for the first time. The rocket will carry one main satellite called “Next Generation Small Satellite 2” and seven other smaller cub-shaped satellites. The main satellite is tasked with verifying imaging radar technology and observing cosmic radiation in near-Earth orbit, the statement said.