Is dark matter in lumps or like sand grains?

The invisible stuff is an essential part of our universe, but is it made of individual particles or lumps?
02 November 2021
Presented by Iacopo Russo
Production by Iacopo Russo.


A spiral galaxy.


This week, listener Rob emailed us to ask “Is dark matter in large lumps or like grains of sand?” Iacopo Russo got some help from the Little Prince story, as well as from Physics professor Francesca Day at Durham University and physicist Jacques Pienaar from the University of Chicago, to find the answer...


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