> The detectors have different sensitivity depending on the direction of the waves, so if a wave comes from a "bad" direction (perpendicular to both arms, e.g.

> The detectors have different sensitivity depending on the direction of the waves, so if a wave comes from a "bad" direction (perpendicular to both arms, e.g. directly from above), a particular detector might not detect anything, even if the wave is strong. Unless there's such a thing as polarized gravitational waves, https://www.ligo.org/science/Publication-O1StochNonGR/ https://www.ligo.org/science/Publication-O1StochNonGR/ which might exist but are hard to discern with current detectors from what I understand. It'd be really cool to learn that there's such a thing as vector and scalar polarized gravitional waves.