About this showing of How the Universe Works
For four years, the Messenger space probe sent images of Mercury, the solar system's smallest planet, closest to the Sun. Could it threaten life on Earth.
Coming up on TV
How the Universe Works
Secret History Of Mercury
On Discovery .History on Sat 19 Sep 2026 at 20:00, ending at 21:00.
When is it on?
How the Universe Works starts at 20:00 on Discovery .History on Sat 19 Sep 2026.
Airing details
ChannelDiscovery .History
StartsSat 19 Sep 2026, 20:00
EndsSat 19 Sep 2026, 21:00
Episode / edition: Secret History Of Mercury
Next showing of How the Universe Works
The next currently listed showing is Sat 19 Sep 2026, 18:00 on Discovery .History.
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