We take your questions about life, Earth and the universe to researchers hunting for answers at the frontiers of knowledge.
http://www.bbc.co.uk/programmes/p04d42rc
The Edge of Space
What do scientists think is outside our universe? Asks Rebecca Standridge from San Francisco in the US. It’s a question which goes right to the limits of human understanding. We look for the answer using balloons, bubbles and the world’s oldest radio telescope. If you have a question about science that you'd like us to investigate email crowdscience@bbc.co.uk. Photo: Lovell telescope Jodrell Bank