There has been a lot of talk lately about gravitational waves, as rumors of their possible detection at the Advanced Laser Interferometer Gravitational Observatory (LIGO) began circulating last week. Gravitational waves—ripples in the fabric of spacetime—are not a new concept, but it’s only recently that the technology designed to detect them has shown much promise.

Back in October 2013 (in the midst of LIGO’s freshly completed upgrade) Scientific American published an article on this exciting technology and its implications for our understanding of the universe. The infographics that accompanied the article (below) break down both how the technology works and what we hope it will reveal.

ILLUSTRATION BY MOONRUNNER DESIGN LTD; GRAPHICS BY JEN CHRISTIANSEN
ILLUSTRATION BY MOONRUNNER DESIGN LTD