NASA has sketched out the development timetable for its return-to-the-Moon Constellation programme's Altair lunar lander, aiming towards a long-term target of an unmanned June 2018 in-orbit propulsion test in preparation for a manned Moon mission in 2020.
An Altair conceptual design contract request for proposals, published on 28 January, calls for submissions from industry by 27 February.
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