Commissioned by the Simons Foundation, Halloran’s 10-foot x 11-foot painted cyanotype, Solar, is installed at the Flatiron Institute Center for Computational Astrophysics in New York. Solar's large-scale cyanotypes and their painted negatives pay homage to the sun. Additional works also a part of the Solar series were featured in the 2021 The Sun Burns My Eyes Like Moons installation at Luis De Jesus Los Angeles: "Cyanotypes are created by exposing paper coated with photo-reactive chemicals directly to sunlight; but in Halloran’s work, capturing the rays of the sun as a material in her technique is only one aspect — the imagery and symbolism present in the compositions is furthermore about rendering the sun itself. Her images derivative of the symmetrical progressions of solar eclipses were made by harnessing the sun’s own rays, so that what results is both a direct dynamic embodiment and an affecting allegorical narrative at the same time."
