Japan has launched the first in a new generation of space rockets, hoping the design will make missions more affordable. The Epsilon rocket is about half the size of Japan's previous generation of space vehicles, and uses artificial intelligence to perform safety checks. Japan's space agency Jaxa says the Epsilon cost $37m (£23m) to develop, half the cost of its predecessor. Read more
JAXA readies small rocket to break cost, use barriers
The Japan Aerospace Exploration Agency figures smaller is better: Striving for cheaper and more frequent launches, JAXA has set its sights on firing its new Epsilon small rocket into space from the Uchinoura Space Centre in Kagoshima next August or September. In its first mission, the Epsilon will carry the small Sprint-A satellite, designed to observe Venus, Mars and Jupiter from Earth's orbit. Read more