They didn't expect these events to be very common, so it was suspicious that they got a signal almost as soon as they turned the interferometer on. Receiving additional events will help reassure people who were afraid that the first result was a glitch of some kind.
The more you read about how this particular instrument is constructed, the more incredulous you'll be that it could possibly work at all, or if it does, that it could pick up anything but noise. So it's very good news that these events are relatively common. (Well, good for the research teams at the LIGO installations, but bad for anyone within a few hundred light years of the events being detected.)
The more you read about how this particular instrument is constructed, the more incredulous you'll be that it could possibly work at all, or if it does, that it could pick up anything but noise. So it's very good news that these events are relatively common. (Well, good for the research teams at the LIGO installations, but bad for anyone within a few hundred light years of the events being detected.)