Guest Stars Alex Filippenko as Himself (Astrophysicist) Chiara Mingarelli as Herself (Astrophysicist) Peter Galison as Himself (Astrophysicist) Grant Tremblay as Himself (Astrophysicist) Amber Straughn as Herself (Astrophysicist) Sheperd S. Doeleman as Himself (Astronomer) Katie Bouman as Herself (Data Scientist)
