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Advanced Ligo represents one of the most sensitive measuring systems ever devised

 

The experiment that should finally detect ripples in the fabric of space-time is up and running.
Labs in the US states of Washington and Louisiana began "listening" on Friday for the gravitational waves that are predicted to flow through the Earth when violent events occur in space.
The Advanced Ligo facilities have just completed a major upgrade.
Scientists believe this will now give them the sensitivity needed to pick up what should be a very subtle signal.
The theoretical physicist Kip Thorne, one of the pioneers behind the experiment, went so far as to say that it would be "quite surprising" if the labs made no detection.
"We are there; we are in the ball park now. It's clear that this is going to be pulled off," he confidently told The Documentary programme on the BBC World Service.

 

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