Open · PD-23-5115 · CFDA 47.049;47.050 · Discretionary
WINDOWS ON THE UNIVERSE: THE ERA OF MULTI-MESSENGER ASTROPHYSICS
Federal grant opportunity posted by U.S. National Science Foundation, cataloged on Grants.gov.
- Varies
- Award range
- Open
- Status
- 63d
- Days left
- 200
- Expected awards
The verdict
WINDOWS ON THE UNIVERSE: THE ERA OF MULTI-MESSENGER ASTROPHYSICS is an open discretionary opportunity from U.S. National Science Foundation, offering Varies by applicant across 200 expected awards. Applications close in 63 days.
- Varies
- award range
- Open
- 63 days left
- 200
- expected awards
- 47.049;47.050
- CFDA program
Opportunity snapshot. This Grants.gov announcement - WINDOWS ON THE UNIVERSE: THE ERA OF MULTI-MESSENGER ASTROPHYSICS - is cataloged under number PD-23-5115 and tied to CFDA assistance listing 47.049;47.050, posted by U.S. National Science Foundation. Grants.gov currently shows the opportunity as open, first posted on August 19, 2023 and last updated on December 17, 2025. The funding category is Discretionary, delivered as a grant.
Award economics. The award range on file is Varies by applicant. It expects to issue 200 awards. Cost sharing is not required, so applicants do not need to commit matching funds to be competitive on this opportunity. Federal award ranges are often upper bounds; actual allocations reflect program appropriations, the strength of the applicant pool, and the evaluation committee's scoring.
Deadline and action path. Applications close on September 30, 2026 - roughly 63 days from today. Every Grants.gov submission requires an active SAM.gov registration and a Unique Entity ID. Review the Eligibility section below carefully, federal eligibility categories (nonprofit, state or local government, tribal, individual, educational institution, small business) have distinct registration and reporting requirements. Pre-application outreach to the listed agency contact is permitted and often welcomed, it helps clarify scope and scoring priorities. Before acting on the deadline or award figures above, verify them directly on the official Grants.gov listing, amendments can change dates and amounts after this page was last refreshed.
Award Range
Varies by applicant
Close Date
September 30, 2026
Astronomy and Astrophysics Postdoctoral Fellowships; Astronomy and Astrophysics Research Grants; Advanced Technologies and Instrumentation; Nuclear Physics - Theory and Experiment; Particle Astrophysics - Experiment; Particle Astrophysics and Cosmology - Theory; Gravitational Physics - Theory; LIGO Research Support; Plasma Physics; Plasma Physics; Plasma Physics; Gravitational Physics - Theory; LIGO Research Support; Particle Astrophysics - Experiment; Astronomy and Astrophysics Postdoctoral Fellowships; Astronomy and Astrophysics Research Grants; Nuclear Physics - Theory and Experiment; Particle Astrophysics and Cosmology - Theory
Posted
August 19, 2023
Expected Awards
200
Instrument
Grant
Description
The Universe is the ultimate laboratory, and we can now probe it as never before through several powerful and diverse windows – electromagnetic waves, high-energy particles, and gravitational waves. Each of these windows provides a different view. Together they reveal a detailed picture of the Universe that will allow us to study matter, energy, and the cosmos in fundamentally new ways. The “Windows on the Universe” Multi-Messenger Astrophysics (WoU-MMA) program identifies three categories of messengers - electromagnetic waves, high-energy particles including neutrinos and cosmic rays, and gravitational waves. The goals of WoU-MMA are to build the capabilities and accelerate the synergy between observations and theory to realize integrated, multi-messenger astrophysical explorations of the Universe. The WoU-MMA program welcomes proposals in any area of research supported through the participating divisions that address at least one of the following criteria: Coordination: Activities to coordinate observations involving more than one messenger. Observations: Observations of astrophysical objects or phenomena that are potentially sources of more than one messenger. Interpretation: Theory, experiment, simulations and other activities to understand or interpret observations of astrophysical objects that are sources of more than onemessenger. Competitive proposals will accelerate the progress in multi-messenger astrophysics and advance the community activities that have been developed during the initial five-year period of the WoU-MMA program. These build on observational and analysis capabilities at the intersection of the explorations enabled by each of the three windows. Efforts to integrate research communities to develop full interoperability between the three windows, and to develop a skilled new workforce in this field, are also encouraged. Proposals should be submitted to the relevant programs listed below (see Related Programs). The WoU-MMA program is not intended to replace existing programs that make awards that involve experimental or theoretical efforts related to each of the three messengers. Rather, the WoU-MMA program is meant to fund awards that have significant components of multi-messenger astrophysics. Priority will be given to proposals for dedicated efforts that significantly advance the WoU-MMA goals. A proposal that is requesting consideration within the context of WoU-MMA should begin the title with the identifying acronym "WoU-MMA:". PIs should ask for consideration and review as a WoU-MMA proposal only if the proposal addresses at least one of the criteria listed above. Proposals marked for consideration by the WoU-MMA program that do not address at least one of these criteria will be reviewed solely within the participating program(s) to which they were submitted. Supplement requests to existing awards within a program that address one of the above criteria will also be considered.
Eligibility
Grants.gov lists this opportunity under eligibility category code 99. These codes correspond to applicant types (state/local government, tribal organization, nonprofit, educational institution, individual, small business, etc.) defined in Grants.gov's own eligibility reference. See the current Grants.gov eligibility categories or check the official listing below for this opportunity's exact eligibility statement.
Official Listing on Grants.gov
View full details, application forms, and submission instructions.
Agency Contact
NSF grants.gov support grantsgovsupport@nsf.gov
Key Dates
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Disclaimer: This information is sourced from Grants.gov and SAM.gov and is for informational purposes only. Opportunity details, deadlines, and eligibility requirements change frequently. Always verify current information directly on Grants.gov before applying. PlainGrants is not affiliated with any federal agency.
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| Sources | the SAM.gov Assistance Listings and Grants.gov |