About this showing of NASA's Unexplained Files
Astronomers detect a potentially habitable planet tantalizingly close to Earth. A chance discovery at NASA reveals a top secret military space program.
Previously on TV
NASA's Unexplained Files
The Earth Next Door
Previously shown on Discovery .History+ 1 on Mon 17 Aug 2026 at 15:00.
This showing has ended
This showing was on Discovery .History+ 1 at 15:00 on Mon 17 Aug 2026. See future airings below or open the main programme page for the latest TV times.
Airing details
ChannelDiscovery .History+ 1
StartsMon 17 Aug 2026, 15:00
EndsMon 17 Aug 2026, 16:00
Episode / edition: The Earth Next Door
SkySky Q / Satellite272Next showing of NASA's Unexplained Files
The next currently listed showing is Fri 4 Sep 2026, 03:00 on Discovery .Science.
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