The next century astrophysics program

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrophysics, High Energy Interactions, Infrared Astronomy, Radio Astronomy, Ultraviolet Astronomy, Hubble Space Telescope, Very Long Base Interferometry, X Ray Astrophysics Facility, X Ray Imagery, X Ray Telescopes

Scientific paper

The Astrophysics Division within the NASA Office of Space Science and Applications (OSSA) has defined a set of flagship and intermediate missions that are presently under study for possible launch during the next 20 years. These missions and tentative schedules, referred to as the Astrotech 21 Mission Set, are summarized. The missions are in three groups corresponding to the cognizant science branch within the Astrophysics Division. Phase C/D refers to the pre-launch construction and delivery of the spacecraft, and the Operations Phase refers to the period when the mission is active in space. Approximately 1.5 years before the start of Phase C/D, a non-advocate review (NAR) is held to ensure that the mission/system concept and the requisite technology are at an appropriate stage of readiness for full scale development to begin. Therefore, technology development is frozen (usually) as of the date of a successful NAR. An overview of the technology advances required for each of the three wavelength groups is provided in the following paragraphs, along with a brief description of the individual missions.

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