<iframe width="580" height="385" src="https://www.youtube.com/embed/31_RY51nWuA?rel=0" frameborder="0" allowfullscreen></iframe> <br>#astrophysics #darkenergy #universe Watch the full debate at The Institute of Art and Ideas <br><a href="https://www.youtube.com/watch?v=31_RY51nWuA">source</a>
