... The Annotated Galactic Center . ... Most are visible with only binoculars. ... The inset frame of Jupiter's most active moon was taken by the robot spacecraft Galileo in April. Just last month the larger image was taken. ... Evidence for Frame Dragging Black Holes . ... Irregular Moons Discovered Around Uranus . ... Where did these two irregular moons of Uranus originate? Last week two previously undiscovered moons of the distant gas planet were confirmed, the first in irregular orbits. ...