• 

  Phil Plait

  饰：Himself

• 

  Penny Boston

  饰：Self,1 episode, 2010,

• 

  Everett Gibson

  饰：Self,1 episode, 2010,

• 

  Seth Shostak

  饰：Self,1 episode, 2010,

• 

  Kevin Eldredge

  饰：Self - Builderis,1 episode, 2010,