How well do space seeds grow on Earth?
One of the biggest challenges we face with space exploration is how to feed astronauts without regular supplies being sent from Earth.
You might remember thousands of schools across the UK taking part in an experiment. They were sent two sets of salad leaf rocket seeds, one which astronaut Tim Peake had been looking after in space, and another which stayed on Earth.
Now it's time to find out how the seeds have grown and get closer to answering the big question: Can seeds grow in space?