João da Nova (16th century), also know as João da Nova Castelia, was a Portuguese explorer of the Atlantic, discoverer of Ascension (1501) and Saint Helena (1502) islands. (15th century - 16th century - 17th century - more centuries) As a means of recording the passage of time, the 16th century was that century which lasted from 1501 to 1600. ... The Atlantic Ocean is Earths second-largest ocean, covering approximately one_fifth of its surface. ... The Ascension is one of the great feasts in the Christian liturgical calendar, and commemorates the bodily Ascension of Jesus into Heaven forty days after his resurrection from the dead. ...