• 

  Maggie Aderin-Pocock

  饰：Herself - Presenter

• 

  David Criswell

  饰：Himself

• 

  Gary Lofgren

  饰：Himself - NASA

• 

  Russet J. McMillan

  饰：Herself - Apache Point Observatory

• 

  Lynn Rothschild

  饰：Herself - Astrobiologist