American astrophysicist and director of New York City's Hayden Planetarium Neil deGrasse Tyson is one of the world's foremost experts on questions about the universe. Like many accomplished professionals, he chooses to wear a Rolex,  photographed below wearing a  two-tone Datejust. 

Astrophysicist Neil deGrasse Tyson Wearing a Rolex (photo: Navid Baratay)

The half Puerto Rican, half African American scientist grew up in the Bronx, New York.  He completed his undergraduate studies at Harvard University before attending UT Austin, where he received a masters degree and, in 1991, received his PhD from Columbia University. He has published several books and remains a strong voice in the scientific community.

Over the past few years, the scientist has become a celebrity after hosting programs for PBS and 2014's Cosmos: A Spacetime Odyssey, a Fox reboot of Carl Sagan's 1980 miniseries, Cosmos: A Personal Voyage. In 2009, Tyson began his popular Star Talk radio show, which would eventually get picked up as a television series by National Geographic Channel. Star Talk guests include Cosmos executive producer Seth Macfarlane, US President Bill Clinton, Richard Dawkins and other influential thought leaders.

Tyson is shown below on the Star Talk Instagram account with Big Bang Theory's Mayim Bialik during a Star Talk Live appearance. Bialik, an actress and PhD in Neuroscience, is wearing an Apple Watch in the photo.

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