NASA Center and Mission Directorate researchers define topics on the basis of immediate and long term mission requirements. In some instances these requirements may change within the course of a year, which means the GSRP topics may change. It is therefore, extremely important that applicants for the GSRP Fellowship coordinate their proposed research topics with the Center or Mission Directorate Technical Advisers, to ensure the current relevancy of research interests to mission research and development requirements. Technical Advisers may also update the research topics on the GSRP web site at various points during the year to reflect any changes in research focus.