Kepler-1910 is an orange K-type dwarf (about 0.64 solar masses, 4,234 K, 0.64 solar radii). Kepler-1910 b is a planet with 1.2 Earth radii, with an orbital period of 5.7 days, discovered in 2021 via transit. The planet was found when it crossed the face of its star, producing periodic dips in brightness that reveal its size and orbital period to space-based photometry. At 1.2 Earth radii, Kepler-1910 b is a compact world comparable in size to rocky planets in our Solar System. Repeated transit observations constrain the planet's orbital inclination and stellar density, anchoring the system's physical scale.