plan for (astronauts) to stay on the moon and Mars," she said.

At the office, which was launched in April, Mukai will head research into medical support for astronauts and the influence of the space environment on life forms, according to JAXA.

She plans to lead a study into raising killifish at the Japanese experimental module Kibo to be launched at the International Space Station and see how life in space affect fish offspring.

Mukai became Japan's first female astronaut when she flew aboard the space shuttle Columbia in 1994 as a payload specialist.