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All NSF IT systems, including NSF.gov, will be unavailable from Saturday, Feb. 21 at 7:00 a.m. EST to Sunday, Feb. 22 at 8:00 p.m. EST due to the relocation of the NSF headquarters. We apologize for any inconvenience.
The Astronomy and Astrophysics Advisory Committee advises the U.S. National Science Foundation, the National Aeronautics and Space Administration and the U.S. Department of Energy on issues of mutual interest and concern.