New Frontiers AO NET June
“The National Aeronautics and Space Administration (NASA) Science Mission Directorate (SMD) plans to release an Announcement of Opportunity (AO) for the third New Frontiers (NF-3) mission no earlier than June 2008. Downselection would occur in 2009. This NF-3 AO will solicit only missions that do not require nuclear sources for power generation or propulsion.”