Even in the vastness of space, sometimes things crash into each other. [...] But with something as big as a black hole merger, you get something remarkable: gravitational waves. [...] But even though we've been able to detect gravitational waves for a while now, it's no easy feat. [...] One wave is almost impossible to distinguish from any of the others. [...] According to a new paper out of the International School for Advanced Studies in Italy (SISSA) creating a constellation of interferometers -instruments that gather information from ways waves interfere with each other-might do the trick.
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