Editing Discovery Program (section)

=== Discovery 11 ===
The original Announcement of Opportunity for a Discovery mission released on April 16, 2004.<ref>{{Cite web|date=16 April 2004|title=Announcement of Opportunity Discovery Program 2004 and Missions of Opportunity|url=https://nspires.nasaprs.com/external/viewrepositorydocument/cmdocumentid=71453/solicitationId=%7BA9BD7790-3480-5577-1572-EB65D9985FD2%7D/viewSolicitationDocument=1/NNH04ZSS002O.pdf|access-date=20 February 2021|website=[[NASA]]}}</ref> The only candidate for selection for a concept Phase A study was JASSI, which was a Jupiter flyby mission based on the New Frontiers Mission Juno that was already under consideration for final selection (eventually Juno was selected as the 2nd New Frontiers mission in 2005 and launched in 2011). No other discovery mission proposed in response to the Announcement of Opportunity was considered for concept study and therefore no Discovery mission was selected for this opportunity (although a mission of opportunity was selected (Moon Mineralogy Mapper) as part of the AO in 2004<ref>{{Cite web|last1=Dolores|first1=Beasley|last2=Cook-Anderson|first2=Gretchen|date=2 February 2021|title=NASA Selects Moon Mapper for Mission of Opportunity|url=https://nspires.nasaprs.com/external/viewrepositorydocument/cmdocumentid=71454/solicitationId=%7BA9BD7790-3480-5577-1572-EB65D9985FD2%7D/viewSolicitationDocument=1/DISC04%20selections.pdf|access-date=20 February 2021|website=[[NASA]]}}</ref>). The next Announcement of Opportunity for a Discovery mission was released on January 3, 2006.<ref>{{cite news |last=Cain |first=Fraser |url=http://www.universetoday.com/966/back-to-venus-with-vesper/ |title=Back to Venus with Vesper |work=Universe Today |access-date=January 11, 2016}}</ref> There were three finalists for this Discovery selection including [[GRAIL]] (the eventual winner), OSIRIS, and VESPER.<ref name="google1">{{cite book |url=https://books.google.com/books?id=CJWLBAAAQBAJ&pg=PA349|title=Robotic Exploration of the Solar System: Part 4: The Modern Era 2004–2013 |author1=Paolo Ulivi |author2=David M. Harland |page=349|date=September 16, 2014|publisher=Springer|isbn=978-1-4614-4812-9}}</ref> OSIRIS was very similar to the later [[OSIRIS-REx]] mission, an asteroid sample-return mission to [[101955 Bennu]], and ''Vesper'', a Venus orbiter mission.<ref name="google1"/> A previous proposal of ''Vesper'' had also been a finalist in the 1998 round of selection.<ref name="google1"/> The three finalists were announced in October 2006 and awarded US$1.2 million to further develop their proposals for the final round.<ref name="autogenerated2006">{{cite web |url=http://www.nasa.gov/home/hqnews/2006/oct/HQ_06342_Discovery_AO.html |title=NASA – NASA Announces Discovery Program Selections |website=Nasa.gov |date=November 2, 2008 |access-date=January 11, 2016 |archive-date=June 29, 2009 |archive-url=https://web.archive.org/web/20090629094310/http://www.nasa.gov/home/hqnews/2006/oct/HQ_06342_Discovery_AO.html |url-status=dead }}</ref>

In November 2007 NASA selected the GRAIL mission as the next Discovery mission, with a goal of mapping lunar gravity and a 2011 launch.<ref name="nbcnews1">{{cite web |url=http://www.nbcnews.com/id/22202797/ns/technology_and_science-space/t/nasa-aiming-look-inside-moon/ |archive-url=https://web.archive.org/web/20160306114716/http://www.nbcnews.com/id/22202797/ns/technology_and_science-space/t/nasa-aiming-look-inside-moon/ |url-status=dead |archive-date=March 6, 2016 |title=NASA aiming to look inside the moon - Technology & science - Space - Space.com |work=[[NBC News]] |date=September 6, 2011 |access-date=January 11, 2016}}</ref> There were 23 other proposals that were also under consideration.<ref name="nbcnews1"/> The mission had a budget of US$375 million (then-year dollars) which included construction and launch.<ref name="nbcnews1"/>