Ashley Davies

饰：Self - Volcanologist at JPL

Scott Sandford

饰：Self - Astrophysicist at Ames Research Center

Geoff Marcy

饰：Self - Astronomer at University of California at Berkeley

杰伊·桑德斯

Jay O. Sanders

饰：Self - Narrator

Steve Squyres

饰：Self - Astronomer at Cornell University