Portal:Astronomy/Did you know/2


 * ... that light echoes appear to exceed the speed of light due to simple interstellar illusions?
 * ... that the Leo IV dwarf galaxy is one of the smallest satellites of the Milky Way?
 * ... that a hydrocarbon lake on Saturn's moon Titan and an active volcano on Jupiter's moon Io are among the Solar System features named after deities from Māori mythology?
 * ... that the Local Void is an empty region of space, devoid of matter, lying adjacent to our own Milky Way galaxy?
 * ... that William Herschel's 40-foot telescope was the largest telescope in the world for 50 years?