CERN

It all started with the Big Bang, physicists have been telling us for the last hundred years. This theory represents cosmologists' reconstruction of the 14 billion year story of the universe. But what was there before time and space began? And, can you even say that something existed before? The recent experimental results of research into gravitational waves, black holes, and cosmic microwave background (CMB, CMBR) —which in Big Bang cosmology is electromagnetic radiation remnant from an early stage of the universe— may change our view of how the world was formed. Maybe it is time to revise the Big Bang theory? 

In this podcast, Professor Steen Hannestad from the Department of Physics and Astronomy at Aarhus University tries  to answer Henrik Prætorius' impossible questions (in Danish).

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Here you can read more about the topic (in English):  

• What happened before the Big Bang? 
• The Higgs bang: The particle that blew up the universe
• The Higgs boson
• Elusive Elementary Particle Finally Caught Decaying—Get the Facts

Science Stories is supported by the Novo Nordisk Foundation.