Aims
Space agencies in the united states russia, japan, canada, and europe are working together. They are using the zero gravity of space to do experiments in biology, physics, and astronomy. They are learning about living in space over a long time, and the effects of this on the human body. The astronauts are growing plants to make oxygen. They Re studying the earth's weather and geography. And they are looking at planets and stars to understand the origin of the universe.