The largest constellations in the sky are Hydra, Virgo, Ursa Major, Cetus and Hercules. The largest northern constellations are Ursa Major, Hercules, Pegasus, Draco and Leo, and the southern ones are Hydra, Virgo, Cetus, Eridanus and Centaurus. All these are Greek constellations, listed by Ptolemy in his Almagest in the 2nd century AD. They have … Continue reading Largest Constellations