... Back in the old days, back when our Galaxy first formed, perhaps thousands of globular clusters roamed our Galaxy. ... Mimas, one of the smaller round moons of Saturn, sports Herschel crater, one of the larger impact craters in the entire Solar System. ... The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. ... NGC 3190, one such galaxy, is the largest member of the Hickson 44 Group, one of the nearer groups of galaxies to our own Local Group of galaxies. ...