Dark Energy Mapped

Dark energy, the mysterious unknown entity which permeates all of space makes up 68% of the universe's total energy. Despite being such a large proportion of existence we still can't directly detect it. An international group of scientists is trying to map dark energy in our night sky. But how do you map something that you can't see and what precisely is dark energy? Liam Messin spoke to Joe Zuntz from the University of Edinburgh who is involved in the project Like this podcast? Please help us by supporting the Naked Scientists