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Call to the Astronomy and Astrophysics Community for Science White Papers

Thank you for your interest in the initial Call to the Astronomy & Astrophysics Community for Science White Papers. The window for submission of science white papers will be between 12:01am EST, Monday, 7 January 2019 and 5:00pm Eastern Tuesday, 19 February 2019. Please make your submissions during that time. For more information please view our webpage at: http://nas.edu/astro2020.html