SpaceX's Crew Dragon has a new space toilet for astronauts. But how does it work?

Talking of dumping urine from the spacecraft out into Space reminds me of the brilliant pun, first coined I believe by Astronaut Walter Schira when he took a photograph of the frozen urine droplets glinting in the sunlight during one of the Gemini missions and jokingly labelled it the Constellation "Urion"! ;)
 

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