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Hubble Space Telescope

Cycle 25 Peer Review Guidelines

JWST Preparatory Proposals: How are they Handled?

The JWST Initiative is designed to provide an opportunity to obtain observations with Hubble that complement and enhance the scientific impact of JWST observations. In some cases, Hubble observations are essential to achieving critical science goals for future JWST programs. SNAP, Archival and Theory proposals do not qualify for this initiative only GO proposals.

The panels and the TAC will consider the connection between the proposed Hubble and JWST observations as part of the review process. The proposal will be assessed based on the science expectations for the full program including both the HST and JWST observations.

Information on the JWST Initiative is available here: