Tokyo : Japan's space agency said on Saturday its prototype reusable rocket successfully completed the first lift-off and landing test, marking a step forward in the cost-cutting technology dominated by SpaceX. The prototype, launched from the Japan Aerospace Exploration Agency (JAXA)'s test site in Noshiro, Akita region, reached a height of about 10 metres (33 feet), and then landed. The flight lasted about 40 seconds, according to JAXA. "I feel we have put a great deal of time and effort into this, and now that the prototype has taken off and landed without problem, I must say I feel a…