H-2A is a liquid rocket that is very large, uses finicky cryogenic fuels and takes many days to prepare for launch. The much smaller Japanese Mu series is a so

H-2A is a liquid rocket that is very large, uses finicky cryogenic fuels and takes many days to prepare for launch. The much smaller Japanese Mu series is a solid space launcher and provides a much better technology base for missiles. http://en.wikipedia.org/wiki/Mu_%28rocket%29 http://en.wikipedia.org/wiki/Mu_%28rocket%29