Guest Stars Neil deGrasse Tyson as Himself Bill Nye as Himself Mike Massimino as Himself Lisa Dang as Herself Klaus Pontoppidan as Himself William Nelson as Himself (Bill Nelson) Joseph DePasquale as Himself Alyssa Pagan as Herself Scarlin Hernandez as Herself Dan Goldin as Himself Javier Alvarez Marquez as Himself Steven Longmore as Himself Stefano Facchini as Himself Thomas Megeath as Himself Yuichi Harikane as Himself Peter Abraham as Himself Yao-Lun Yang as Himself Kielan Wilcomb as Herself Dan Coe as Himself Saurabh Jha as Himself Seiji Fujimoto as Himself Cathy Menzel as Herself Mike Menzel as Himself Amber Straughn as Herself Dr. Becky Smethurst as Herself Dr. Thomas Zurbuchen as Himself
