Phil and Heather will attempt to contact aliens in Norway in the next episode of “Expedition X.”

“Expedition X,” season 10, episode five, airs at 9 p.m. Wednesday, Sept. 17, on the Discovery Channel.

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The episode is called “Frozen Aliens.”

The synopsis is, "Phil and Heather continue their investigation into claims of alien activity in Norway’s Hessdalen Valley, accompanied by chilling reports of creatures visiting us on Earth. Using the latest tech, they attempt first contact."

The cast of “Expedition X” is Josh Gates, Heather Amaro and Phil Torres. They investigate supernatural encounters, mysterious creatures and

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