Neutronium comes up in Star Wars, Star Trek and many of the Marvel Comics. It's a hypothetical substance made purely of neutrons. Jan Eldridge, Associate Professor of Physics at the University of Auckland tells Bryan Crump how likely

Associate Professor in Physics at the Faculty of Science, University of Auckland, Jan Eldridge gives us her scientific take on Neutronium a material widely written about in fiction - including Star Wars, Star Trek and in the Marvel comics.

Spoiler Alert - it's a real thing.

Go to this episode on rnz.co.nz for more details