Latest News
  • 2013-08-15: The scheduled maintenance for the ARK database has completed, and ARK/RPS is fully operational. If you encounter any issues, please contact the ARK Help Desk.
  • 2012-01-12: Due to new NASA IT security policies, all ARK passwords must be changed by 11:59pm EST, January 24th, 2012. Failure to do so will result in your ARK account being disabled. Please change your ARK account password as soon as possible.
  • 2009-10-23: Subscribe to the ARK/RPS calendar (instructions) to stay informed of upcoming proposal submission deadlines.

The Astrophysics Research Knowledgebase (ARK) is a service provided by NASA's High Energy Astrophysics Science Archive Research Center (HEASARC) designed to create a user database of results related to the archival data hosted by the HEASARC. ARK provides a web interface to submit and search information stored in the database. ARK is also used for the HEASARC's Remote Proposal System (RPS), supporting a variety of missions.

Registration is required to access this service. Users are given permissions to submit to and/or search specific tables in the database based on their needs. If a group of users wants to collaborate and share results via ARK, contact our help desk.


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