In the words of Strymon:

From atmospheric dreampop to splattery aughties post-rock, shimmery Sunday soaks to fathomless meditative mantras, the Strymon NightSky reverb pedal is voiced to handle the most immersive musics on the planet. NightSky’s three reverb engines, advanced waveform modulation, 2-octave harmonics generator, and additional synth-style filter and drive controls will have you in the ballpark for whatever style of ambience you’re chasing.