• 

  内尔·皮尔森

  Neil Pearson

  饰：Self - Narrator,

• 

  Robert Hazen

  Robert Hazen

  饰：Self,(as Prof Bob Hazen)

• 

  Stephen Lussier

  Stephen Lussier

  饰：Self

• 

  Boris Feigelson

  Boris Feigelson

  饰：Self,(as Dr Boris Feigelson)

• 

  Tracy Hall

  Tracy Hall

  饰：Self,(as Dr Tracy Hall)