High Quality Content by WIKIPEDIA articles! The International Heliophysical Year is a UN-sponsored but scientifically driven international program of scientific collaboration to understand external drivers of planetary environments and universal processes in solar-terrestrial-planetary-heliospheric physics. The IHY will focus on advancements in all aspects of the heliosphere and its interaction with the interstellar medium. This effort will culminate in the "International Heliophysical Year" (IHY) in 2007-2008.