Microgravity,
True or near vacuum pressures,
Temperature in space.
A long-planned episode that gets back to the roots of ferreting out misconceptions (though three tied together): Little Things in Space!!! This episode, if you couldn’t get it from the haiku, covers the concept of microgravity, vacuum, and temperature (what does temperature mean if there’s nothing there to experience it?). There are no additional segments.
Thermometers
Exposing PseudoAstronomy 