Japan has successfully launched its new H3 carrier rocket, a welcome morale boost after a failed attempt last year. The rocket lifted off on Saturday from the Tanegashima space centre in the southern tail of the Japanese archipelago with a dummy satellite and two miniature satellites on board. With the successful launch, the Japanese space agency JAXA wants to dispel doubts about the reliability of its new launch vehicle. JAXA said the rocket had entered its planned orbit after the launch. During a first launch attempt last year, the propulsion system of the second rocket stage failed to ignit…