Mare Cognitum, the brainchild of multi-instrumentalist Jacob Buczarski, is a one-man atmospheric black metal project known for its celestial and deeply philosophical themes. Emerging from the depths of the American underground metal scene, Mare Cognitum debuted with "The Sea Which Has Become Known" in 2011. This inaugural album laid the foundation for Buczarski's expansive soundscapes, combining ferocious black metal elements with atmospheric and cosmic influences.

Over the years, the project's sonic universe continued to evolve, with a number of critically acclaimed releases that have contributed to its growing reputation within the atmospheric black metal community. Albums like "Phobos Monolith" (2014) and "Luminiferous Aether" (2016) showcased Buczarski's ability to craft intricate compositions that are at once ferocious and meditative, drawing on astronomical and transcendental themes. In 2020, Mare Cognitum released "Solar Paroxysm," a record considered by many as a zenith in its discography, featuring complex layers of melody and an intensity that mirrors the chaotic beauty of the cosmos. Alongside this, Buczarski's collaboration with Spectral Lore on "Wanderers: Astrology of the Nine," further pushed the boundaries of his musical exploration, solidifying Mare Cognitum's place as a unique and visionary force in the realm of atmospheric black metal.