• 
  Matt Kirshen

  12 episodes, 2016
• 
  Wally Wingert

   Narrator
• 
  Alison Ward

   Herself (5 episodes, 2016)
• 
  Teagan Wall

   Herself (4 episodes, 2016)
• 
  Kyle Hill

  4 episodes, 2016
• 
  Andy Wood

  4 episodes, 2016
• 
  Alison Haislip

   Self
• 
  Leland Melvin

   Self

• 
  Brent Bushnell

   Self
• 
  Eric Gradman

   Self
• 
  Alonzo Bodden

  Self - Former Airplane Mechanic, Current Comedian
• 
  Dave Farina

  Self - Chemistry Professor, Professor Dave Explains
• 
  Veronica Belmont

  Self - Tech Expert & Futurist
• 
  Jessi Combs

  Self - Metal Fabricator, Race Car Driver
• 
  Dianna Cowern

  Self - Host, Physics Girl

• 
  Adam Sadowsky

  Self - Inventor & Entrepreneur, Synn Labs
• 
  Paul D. Ronney

  Self - Profesor of Aerospace & Machanical Engineering, USC
• 
  Cara Santa Maria

  Self - Science Communicator
• 
  Ariel Waldman

  Self - Space Activist & Author