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.
Oort Cloud: 10 Need-To-Know Things. 1  The Oort Cloud is a region of space. The known comets in this region are much smaller than the Earth's moon. 2  The Oort Cloud surrounds our sun, a star. The Oort Cloud is a spherical shell, occupying space at a distance between five and 100 thousand AU.