National Astronomy Meeting: Thursday
Dark matter has long been needed by cosmologists to explain how structures like galaxies remain so strongly bound together. Catherine Peymans from the University of Edinburgh tells me about the latest models of dark matter, meanwhile Benoit Famaey and Hongsheng Zhao tell me how they believe that cosmological models can be constructed that don't have any dark matter at all.
In this episode
08:40 - Is dark matter real?
Is dark matter real?
with Hongsheng Zhao, University of St Andrews
Hongsheng Zhao presented the first modelling of the dynamics of the Local Group to use a rival model to dark matter, called MOND, at NAM today. But what is MOND, and is it credible? I talk to believers and skeptics.