Born and raised in New York City, astrophysicist Neil deGrasse Tyson discovered his love for the stars at an early age. After studying at Harvard University, he earned his doctorate from Columbia University in 1991. Tyson went to work for the Hayden Planetarium in 1996 and still serves as its director. He hosted the NOVA ScienceNow series from 2006 to 2011. Tyson remains a popular TV science expert today and has amassed over 12 million followers on Twitter.

*NOTE: YOU MUST COMPLETE EACH STEP IN ORDER AS DEPICTED OR ELSE THE PROGRAM WILL NOT CALCULATE THE VALUES PROPERLY