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.
Main articles: Black hole, List of black holes and List of most massive black holes. Black holes are the end point evolution of massive stars. Technically they are not stars, as they no longer generate heat and light via nuclear fusion in their cores. 1  Stellar black holes are objects with approximately 4â15 Mâ .