 Complete the following phrase:  In 1829 Verninac took command of the corvette LAstrolabe, with which Jules Dumont dUrville had made his first voyage around the world. He went to Alexandria to pick up the mission led by Jean-François Champollion, which had completed three years of exploration and studies in the Nile Valley. He took them back to Toulon, and made friends with Champollion on the voyage. He then participated in the 