Leo I is a dwarf spheroidal galaxy in the Local Group of galaxies dominated by our Milky Way Galaxy and M31 . Leo I is thought to be the most distant of the eleven known small satellite galaxies orbiting our Milky Way Galaxy . Besides the LMC and the SMC , all Milky Way satellite galaxies are small, dim, dwarf spheroidals , including the closest galaxy - the Sagittarius Dwarf . Leo I is most distant than most of them, thought to be about 250 kpc away. Analysis of stars in Leo I show it contains many stars only about 3 billion years old - much younger than in most galaxies.
Media Credits & Attribution
Credit: Anglo-Australian Telescope photograph by David Malin Copyright: Anglo-Australian Telescope Board