More than three lakh kilometres from Earth and days before their lunar flyby, astronauts aboard Artemis II found themselves dealing with a clogged toilet vent and frozen urine inside the Orion capsule. Here's how the problem was fixed. Just hours after lifting off on April 1, Moon-bound Nasa's Artemis II crew realised that the Orion spacecraft's toilet pump was not working properly. There was not enough water to prime the system. The problem was fixed quickly, and astronaut Christi... [6146 chars]