{ "item_title" : "Exo-S", "item_author" : [" NASA "], "item_description" : "For the first time in human history, the technological reach exists to discover and characterize planets like Earth orbiting stars other than the Sun. A space-based direct imaging mission to ultimately find and characterize other Earths is a long-term priority for space astrophysics (NRC 2010). The Exo-Starshade (Exo-S) Science and Technology Definition Team (STDT) is tasked by NASA to study the starshade-telescope mission concept under the Probe class of space missions, with a total cost of less than $1B (FY15 dollars). Per the STDT charter, the mission should be ready for a new start in 2017, with launch in 2024, and the science must be beyond the expected ground capability at the end of the mission. The Exo-S mission concept study began in May 2013 and will run until the Final Report delivery in January 2015.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/50/874/715/1508747156_b.jpg", "price_data" : { "retail_price" : "12.95", "online_price" : "12.95", "our_price" : "12.95", "club_price" : "12.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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