While the NSBF (National Scientific Balloon Facility) using instruments like this to BOOMERanG (Balloon Observations of Millimetric Extragalactic Radiation and Geophysics)
and measure cosmic microwave background radiation – the Japanese astronaut Takao Doi is operating pretty easy:
While Lisa ‘Spacediaper’ Nowak is down on earth, on the ISS nature’s call currently will be answered by a Russian-Build System but as the planet keeps turning the Japan Aerospace Exploration Agency (JAXA) has teamed up with engineers from the private sector to develop a next-generation space toilet, which they hope to complete within the next five years.