The seeds will spend a number of months on board and return to earth in spring 2016. They'll then be packaged up with seeds that have remained on earth and sent to thousands of schools all over the UK. Around half a million children will be invited to take part in the experiment, which tasks them with growing and comparing the growth of two packets of 100 seeds and sharing their results on a national online database. While the project lets the UK Space Agency crowdsource data and better understand the effects space has on plant life, it's mainly designed to encourage pupils to think scientifically in the hope that it'll inspire the next generation of scientists, physicists and engineers.