> ## Content Index
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# What’s The Hottest Hot and Coldest Cold?
- URL: https://www.cascadepbs.org/show/its-okay-be-smart/episode/whats-the-hottest-hot-and-coldest-cold-ufg6mo/
- Published: 2024-04-02T23:16:44.000Z
- Updated: 2025-08-20T09:54:32.000Z
- Description: Weird things happen at extreme hot and absolute cold.
- Author: Cascade PBS Staff
- Tags: Be Smart, Season 6, Episode 16, #ZZZ_Episode_db46dc61-518d-4711-bc1f-2b488cd83384, #episode, #ZZZ_Show_dc38a6e9-266e-43c1-b647-45e7445fad27, #v1.16

The hottest and coldest temperatures in our universe are rarely witnessed, but in these rare spots, our understanding of physics is challenged. Weird things happen at extreme hot and absolute cold.