Leo I — galaxy, shown live in Cosmoscope, a real-time 3D map of the universe.
A distant Milky Way satellite that swings far out on its orbit — its stars kept forming late, unusually so for a dwarf spheroidal.
Leo I is placed at its true position on the sky and at its real measured distance, not as a flat backdrop. Fly out from the Sun in the live 3D view and watch it change from a point of light into structure as you approach, with the scale bar showing just how far out you have travelled.