Although Italian by birth, maritime explorer Christopher Columbus sailed across the Atlantic Ocean and discovered the Americas under the Spanish emperorâs name. During his first voyage, he led three Spanish galleons, the NiÃ±a, Pinta, and the Santa Maria.
Instead of the general notion that a void is a region of space with a low cosmic mean density; a hole in the distribution of galaxies, it defines voids to be regions in which matter is escaping; which corresponds to the Dark Energy equation of state, w.
Galaxies themselves tend to be arranged into large structures called superclusters, which are in turn arranged into massive filaments separated by immense voids. The largest of these voids, the Eridanus Supervoid, has a diameter of nearly 1 billion light-years, about a 10,000 times wider than the Milky Way Galaxy.