The Edge of Space
What do scientists think is outside our universe? Asks Rebecca Standridge from San Francisco in the US.
It\u2019s a question which goes right to the limits of human understanding.
We look for the answer using balloons, bubbles and the world\u2019s 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