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General Coordinates Network

GCN Circulars are now administered through the General Coordinates Network https://gcn.nasa.gov (effective April 17, 2023)

The modernized GCN Circulars experience is part of the new GCN web site, where you can:

  • Browse and search Circulars in our all-new archive.
  • Sign up for and manage your own email subscriptions.
  • Enroll yourself and your colleagues to submit Circulars with arXiv-style peer endorsements for new contributors.
  • Submit Circulars with our new Web form, or continue to submit by email.

This legacy GCN Classic Circulars service has been disabled.

  • All legacy accounts are transferred to the new system.
  • The legacy archive is frozen.
  • Email submissions to the old address will be forwarded to the new system and processed normally. We encourage use of the new submission address.
For questions, please contact the GCN Team.

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For questions or subscription changes, please contact the GCN Team.

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    This file was last modified on Monday, 17-Apr-2023 13:39:28 EDT