The scientific research Tim Peake will carry out in space

Briton's International Space Station adventure will include experiments on the effects a journey to Mars could have on future astronauts

Tim Peake will spend much of his 40-hour working week on science experiments. The International Space Station is the only laboratory where research can be done in a weightless environment and hundreds of experiments are either ongoing or waiting to start.

To ensure astronauts are safe when they are working in orbit, and in the future when they are sent on long-duration missions to other planets such as Mars, researchers need to understand how space affects the human brain and body.