MARSBalloon 2019: An out of this world experiment

MARSBalloon is an exciting science project designed to inspire UK students to pursue science, technology, engineering and maths (STEM) subjects. It works by launching everyday objects and materials into the Earths stratosphere and then returning them back to schools for testing, once the experiments have been safely retrieved back on Earth. MARSBalloon 2019 is the 7th year the project has been run and has been the biggest launch so far.