Water bears (tardigrades) are the first animals in the world to have survived exposure to the vacuum and radiation of space. This has been established by Ingemar Jönsson, a researcher at Kristianstad University in Sweden.
It has been nearly a year since the ecologist Ingemar Jönsson had some 3,000 microscopic water bears sent up on a twelve-day space trip. The aim of the research project, which was supported by the European Space Agency, was to find out more about the basic physiology of tardigrades by seeing if they can survive in a space environment.