As NASA reports, this "global view of Venus is created from Magellan, Pioneer, and Venera data." This look from several spacecrafts displays the northern hemisphere of the planet. By watching the changes of Venus through his telescope, Galileo came to his groundbreaking conclusion that Venus orbits around the sun. This was revolutionary for the time, as most believed that the sun and all planets revolved around the Earth. When Venus is seen from the Earth, it is the brightest planet in the sky.