14 DAY TRIAL // Thanks to the efforts of astronaut Chris Hadfield in particular, the people of Earth are a lot more informed about the everyday happenings aboard the International Space Station.
But there are still plenty of unanswered questions, the biggest of which, according to the European Space Agency at least, is what do astronauts do about dirty underwear.
The ESA hit the streets in several European cities to see if anyone had any idea and the responses it got were, to say the least, imaginative.
The truth though is that astronauts don't wash their underwear, they don't wash any of their clothes at all in fact, since water is more expensive than gold in space.
So astronauts get a batch of fresh laundry as often as they can, when a resupply ship, like the HTV-4 which docked with the ISS a few days ago, comes by. The dirty laundry is packed into the supply ships and burned on reentry.
Most resupply ships, the European, Russian and Japanese ones, aren't designed to land back down on Earth. Only the Soyuz, which carries the astronauts, and the private SpaceX Dragon capsule can bring back material.