<http://schema.org/about>
"NASA plans to wait until 2015 to lay out a proposal for its next big astrophysics mission, which could take the form of a single large spacecraft or a series of"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/whats-next-for-nasa-scope-of-next-astronomy-mission-takes-shape>