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.

View on Grants.gov

Agency Contact

NSF grants.gov support grantsgovsupport@nsf.gov

Key Dates

Posted August 19, 2023
Close Date September 30, 2026
Archive Date October 30, 2026
Last Updated December 17, 2025

Frequently Asked Questions

What is this grant opportunity?
This is a federal funding opportunity titled "WINDOWS ON THE UNIVERSE: THE ERA OF MULTI-MESSENGER ASTROPHYSICS", offered by U.S. National Science Foundation. It is associated with CFDA program 47.049;47.050. 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. E...
Is this opportunity still open?
Yes, this opportunity is currently open for applications. The closing date is September 30, 2026.
How much funding is available?
The award range for this opportunity is Varies by applicant. Expected number of awards: 200.
How do I apply?
Applications for federal grant opportunities are typically submitted through Grants.gov. Visit the official listing at grants.gov for application instructions, required documents, and submission deadlines.

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.

Data sourced from the SAM.gov Assistance Listings and Grants.gov. See our methodology for details. Retrieved and formatted by PlainGrants