`` Building this facility that allows us to understand how to operate for long periods of time in space to allow us someday to go to Mars . '' Astronaut Scott plans to study in Australia this year . Kelly 's twin brother , Mark , will take part in a ` ` twins study '' from the UK .
Astronaut Scott plans to study in Australia this year . Kelly 's twin brother , Mark , will take part in a ` ` twins study '' from the UK .