'%20x='0'%20y='0'%20height='100%25'%20width='100%25'%20%0A%20%20%20%20%20%20%20%20%20%20xlink%3Ahref='data:image/jpg;base64,/9j/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCAAHAAoDASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAb/xAAgEAACAQMEAwAAAAAAAAAAAAABAgMABCEFBhExEjJx/8QAFQEBAQAAAAAAAAAAAAAAAAAABQf/xAAdEQACAQQDAAAAAAAAAAAAAAABAgQAAyFhBRFB/9oADAMBAAIRAxEAPwCe2HunUNJsoLES2zwtKZGJDeTIVyPXvnPdS7pArsCQCDwQpYgfMUpQzSrjYPlUOPw0dXJHed7Nf//Z'%3E%3C/image%3E%3C/svg%3E)
15. Neil deGrasse Tyson
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In season 4, episode 7, famous astrophysicist is at Caltech when he is introduced to Sheldon. The two get into an argument over the fall of Pluto from planet status—for which, Sheldon blames Tyson. Even though Tyson apologizes to Sheldon, he is no mood to forgive him. The scientist made a second appearance in season 12, episode 1, when Raj starts fighting with Tyson on Twitter and Bill Nye joins in!
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Edited by Mudeet Arora
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