In 1908 he became professor of astronomy at the university.

He was a professor of astronomy and a sweet man, though very thin.

In 1798, he was appointed professor of mathematics and astronomy at the University.

Four years later, he was appointed professor of astronomy at Oxford.

In 1991, he joined the faculty at Cornell as professor of astronomy.

He returned to Dartmouth in 1892 as an assistant professor of astronomy.

So I went to a lecture of a professor of astronomy.

I was also an assistant professor of astronomy, which does me precious little good in this place.

In 1973 he became a professor of astronomy at Harvard University and remained there for 26 years.

Shortly after, in 1978, she became a professor of astronomy at Yale University.