On Thursday, the scientists at LIGO announced they'd officially found gravitational waves. This truly is a remarkable discovery, and confirms the final piece of Einstein's general theory of relativity. Read more about the announcement, and what it means for science, here. And check out our gravitational waves explainer for more background on this scientific phenomenon.
Physicists have been buzzing (or rather, tweeting) about the possibility that the Laser Interferometer Gravitational-Wave Observatory (LIGO) experiment finally discovered gravitational waves. LIGO has been searching for these cosmic ripples for over a decade. Last September, it upgraded to Advanced-LIGO, a more sensitive system that's also better at filtering out noise. Advanced-LIGO has a much stronger chance of collecting concrete evidence of gravitational waves—if it hasn't already.
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