The planet he uncovered was a twin to Earth...but so ominously different!
An astronaut enters a vortex and crash-lands on a parallel planet where he's not welcome.
Stargate SG-1: Children of the Gods
Harrison Bergeron
Titan A.E.
Stowaway
Doctor Who: Deep Breath
Roswell
Blackadder: Back & Forth
Into Pitch Black
Doctor Who: The Snowmen
Gravity
The Man Who Fell to Earth
Oblivion
