Still to this day modern scientists don’t really know what the majority of our universe is made out of. The atoms which are the building blocks for everything within only account for four percent, the remaining is dark matter and dark energy, this dark mater however can be considered as ‘don’t know’. This is where the Large Hadron Collider at CERN comes in and it has recently been upgraded. When it is turned back on this month (March 2015), it will have twice the energy it had before, meaning that collisions will be more powerful and the hope is that scientists will finally discover the identity of dark matter. This puts a lot of pressure on those involved because if dark matter fails to show itself, it may mean that we need to rethink physics.
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Working link https://www.youtube.com/watch?v=KbGl77xDUVg
I have a picture without sound.
It started that way for me too, but I gave it a minute and it started working.