  Ten years later he is recorded as having been present at the general chapter of the Dominican Order held in Bologna. Two years later he visited Saxony where he observed the appearance of a comet. Some time between 1241 and 1242 he was sent to the University of Paris to complete his theological education. He followed the usual prescription of lecturing on the Sentences of Peter Lombard. In addition he began writing his six part Summa parisiensis dealing with the sacraments of the Church, the incarnation and resurrection of Christ, the four coevals, human nature, and the nature of the good. He took his degree as master of theology in 1245 and began to teach theology at the university under Gueric de Saint-Quentin. St. Thomas Aquinas became his student at this time and remained under Albert’s direction for the next three years. In 1248 Albert was appointed regent of studies at the studium generale that was newly created by the Dominican order in Cologne. So Albert, along with Thomas Aquinas, left Paris and went to Cologne. Thomas continued his studies under Albert in Cologne and served as magister studium in the school as well until 1252. Then Thomas returned to Paris to take up his teaching duties while Albert remained in Cologne, where he began to work on the vast project he set himself of preparing a paraphrase of each of the known works of Aristotle.