In our efforts to better understand the very fabric of the universe we sometimes have to think outside the box.
So it might seem strange then to think that in our search for the elusive dark matter we need not necessarily look to the depths of the solar system, the Milky Way, or the universe itself but to the ground beneath our feet.
Alan Kelly, Professor in Astrophysics and Director of Space Technology and Industry Institute at Swinburne University of Technology in Australia joined Jonathan to talk about The Stawell Underground Physics Laboratory - held inside an active gold mine 1 km beneath the surface of the earth.
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