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