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In the beginning there was the bang. Our universe was created out of nothing. But what happened directly after the Big Bang? Space expert Ulrich Walter explains how the universe expanded and which processes are still going on today. He is also concerned with the question of whether our universe will expand forever. The astronaut explains the phenomena that our cosmos contains: What are dark energy and dark matter? Are there really parallel universes? ???? SPACETIME - all programs - • SPACETIME documentary series with Prof. Dr. Ul... ???? Our reports & documentaries - http://bit.ly/WELTdokus ???? Subscribe to the WELT YouTube Channel - http://bit.ly/WeltVideoTVabo #Universe #Space #Documentary