The new hybrid X Heucherella plant named ‘Galactica’ with deeply-incised, palmately lobed foliage of variable coloration starting in the spring as coppery-red with burgundy veins, transitioning to deep burgundy with silvery-gray surrounding veins during flowering and in winter becoming deep green with silver frosting and black mahogany surrounding veins. ‘Galactica’ begins flowering in late spring with a near white with slight blush of pink. The new plant is suitable for landscaping en masse, as a specimen accent or as a container plant.