International Heliophysical Year

2007 will mark the 50th Anniversary of the International Geophysical Year (IGY) and 50 years of space exploration. As we also approach the 50th anniversary of NASA, we have established an extensive suite of spacecraft and observatories, our "Great Observatory," which places us on the verge of a system-wide understanding of the entire interconnected heliophysical system. Fifty years after the IGY, the world's science community will again come together for an international program of scientific collaboration: the International Heliophysical Year (IHY) 2007.                                                                                                                                                                                         

NASA Logo, National Aeronautics and Space Administration