Passage: Tyson was born in Manhattan as the second of three children, into a family living in the Bronx. His mother, Sunchita Maria Tyson (née Feliciano), was a gerontologist for the U.S. Department of Health, Education and Welfare, and is of Puerto Rican descent. His African-American father, Cyril deGrasse Tyson (1927–2016), was a sociologist, human resource commissioner for New York City mayor John Lindsay, and the first Director of Harlem Youth Opportunities Unlimited. Tyson has two siblings: Stephen Joseph Tyson and Lynn Antipas Tyson. Tyson's middle name, deGrasse, is from the maiden name of his paternal grandmother, who was born as Altima de Grasse in the British West Indies island of Nevis.Tyson grew up in the Castle Hill neighborhood of the Bronx, and later in Riverdale. From kindergarten throughout high school, Tyson attended public schools in the Bronx: P.S. 36, P.S. 81, the Riverdale Kingsbridge Academy (then called "P.S. 141"), and The Bronx High School of Science (1972–1976) where he was captain of the wrestling team and editor-in-chief of the Physical Science Journal. His interest in astronomy began at the age of nine after visiting the sky theater of the Hayden Planetarium. He recalled that "so strong was that imprint [of the night sky] that I'm certain that I had no choice in the matter, that in fact, the universe called me." During high school, Tyson attended astronomy courses offered by the Hayden Planetarium, which he called "the most formative period" of his life. He credited Dr. Mark Chartrand III, director of the planetarium at the time, as his "first intellectual role model" and his enthusiastic teaching style mixed with humor inspired Tyson to communicate the universe to others the way he did.Tyson obsessively studied astronomy in his teen years, and eventually even gained some fame in the astronomy community by giving lectures on the subject at the age of fifteen. Astronomer Carl Sagan, who was a faculty member at Cornell University, tried to recruit Tyson to Cornell for undergraduate studies....

Question: Who made an attempted to get Tyson recruited at Cornell University to pursue his education?
Astronomer Carl Sagan