In four months, Commander Yuki Tanaka will leave Earth and travel to the International Space Station. For six months, she will be living 400 kilometres above the planet, conducting research that could change our understanding of human biology. We asked her what she will be doing at key moments during her mission.
In January, while most people on Earth will be celebrating the New Year with fireworks and parties, Commander Tanaka will be conducting experiments on protein crystallisation in microgravity. Scientists believe that proteins form more perfect crystals in space, which could help in the development of new medicines. By February, she will be testing a new water recycling system designed to reduce waste on long space missions.
March brings the most challenging part of the mission. Commander Tanaka will be carrying out a spacewalk to repair a damaged solar panel. While her family will be sleeping in their home in Tokyo, she will be floating in open space, working with tools designed for gloved hands. 'It requires enormous concentration,' she says. 'One mistake can be serious.'
By May, she will be preparing for her return to Earth. This means re-learning how to walk, as her muscles will have weakened significantly after months in zero gravity. She will be exercising for up to two hours each day to rebuild her strength.
When asked about the holidays, Commander Tanaka smiles. 'I know exactly what I will be doing on Christmas Day,' she says. 'I will be eating rehydrated turkey and watching Earth rotate slowly below me. Millions of people will be opening presents with their families. I will be doing something rather different — and I would not change it for the world.'