The H-IIB Rocket is a Japanese launch vehicle developed by Mitsubishi Heavy Industries for the Japan Aerospace Exploration Agency (JAXA). It is designed to transport cargo to the International Space Station (ISS) and can carry payloads of up to 16 tons to low Earth orbit. The rocket features a two-stage design, with the first stage powered by four LE-7A engines. The H-IIB made its first flight in 2009 and has since been used for several successful missions, including the launch of the HTV cargo spacecraft. Its reliability and capacity make it a key component of Japan's space exploration efforts.