Astronomy and Astrophysics Postdoctoral Fellowships
Can you apply?
This grant is for early-career scientists who have recently earned (or are about to earn) a PhD in astronomy, astrophysics, or closely related fields. Applicants typically must be U.S. citizens, permanent residents, or nationals, and the fellowship is designed to support postdoctoral researchers during the critical early career transition period. The program funds research conducted at eligible U.S. institutions and universities. Geographic scope is nationwide. Supported activities include original research in observational astronomy, theoretical astrophysics, instrumentation development, and related scientific inquiry. Fellowships provide salary and research support, enabling recipients to conduct independent or collaborative astronomical research while developing their careers in academia or research institutions.
Program description
NSF Astronomy and Astrophysics Postdoctoral Fellowships provide an opportunity for highly qualified, recent doctoral scientists to carry out an integrated program of independent research and education. Fellows may engage in observational, instrumental, theoretical, laboratory or archival data research in any area of astronomy or astrophysics, in combination with a coherent educational plan for the duration of the fellowship. The program supports researchers for a period of up to three years with fellowships that may be taken to eligible host institutions of their choice. The program is intended to recognize early-career investigators of significant potential and to provide them with experience in research and education that will establish them in positions of distinction and leadership in the scientific community.
Who can apply
Eligible applicants
How to apply
Application links
Required documents
- NSF Form (typically completed in FastLane or Grants.gov)
- Project Description (2 pages maximum)
- References Cited
- Biographical Sketch (CV, typically limited format)
- Current and Pending Support documentation
- Letters of Recommendation (typically 3-4 from established astronomers/astrophysicists)
- Budget and Budget Justification
- Mentoring Plan (if applicable)
Program contact
- 👤 U.S. National Science Foundation
- 📧 grantsgovsupport@nsf.gov
- 📞 703-292-4203
Funding track record
Recent awards under CFDA 47.049 from the last 3 years — real organizations that won funding through this same program.
Top 10 Largest Recent Awards
-
$570,618,065
-
$480,514,346
-
$406,246,554
-
$277,033,094
-
$236,459,999
-
$190,969,692
-
$159,846,534
-
$144,261,921
-
$140,880,752
-
$124,000,000
Top States by Funding
- VA 5 awards $955.1M
- DC 4 awards $907.5M
- CA 12 awards $589.6M
- AZ 8 awards $566.5M
- NY 7 awards $319.1M
Source: USAspending.gov — federal spending transparency. Data covers last 3 years.
Funding history
Annual funding for this program — Federal obligations (CFDA 47.049). How funding has trended year over year.
| 2024 | $1,539,910,000 | |
| 2025 | $1,537,650,000 | |
| 2026 est. | $512,280,000 |
FAQ
Who is eligible to apply for this NSF Astronomy and Astrophysics Postdoctoral Fellowship?
Applicants must have earned or be about to earn a PhD in astronomy, astrophysics, or related fields. U.S. citizenship, permanent residency, or national status is typically required. The fellowship is designed for early-career researchers within a few years of PhD completion.
What is the typical funding range for this fellowship?
NSF postdoctoral fellowships commonly provide 1-3 years of support, typically ranging from $60,000 to $90,000+ per year for salary and research expenses. Actual amounts vary by program year and individual circumstances.
What types of research activities are supported?
The program supports a wide range of astronomical research including observational studies, theoretical astrophysics, computational modeling, instrument development, survey work, and laboratory astrophysics. Research can be conducted at universities, observatories, or other eligible institutions.
How competitive is this fellowship?
NSF postdoctoral fellowships are highly competitive, typically with acceptance rates around 10-20%. Applications are evaluated on research merit, the applicant's qualifications, and the host institution's suitability.
What is the deadline and application process?
The deadline for this funding cycle is October 15, 2026. Applications are submitted through the NSF FastLane or Grants.gov system and require a research proposal, CV, publication list, and letters of recommendation from established astronomers.
💡 Tips for applicants
- Start early and engage with potential mentors and host institutions well before the deadline; strong letters of recommendation are critical to competitiveness
- Develop a clear, innovative research plan that fits within the scope of astronomy and astrophysics and articulates how the fellowship will advance your independent research trajectory
- Clearly articulate how the host institution, mentor, and available resources will support your research goals and career development
- Ensure your application demonstrates both scientific merit and the broader impacts of your proposed research, including contributions to education, diversity, or public understanding of science
- Carefully review NSF's two-page Project Description limit and guidance on budget justification; precision and alignment with NSF priorities (e.g., diversity initiatives) strengthen competitiveness
⚠️ Common mistakes
Applications often lack a compelling articulation of how the fellowship supports independent research development beyond the PhD, which is a core NSF priority. Many applicants underestimate the importance of the host mentor's letter and facility support; weak institutional commitment significantly weakens competitiveness. Additionally, proposals that are too broad or fail to demonstrate clear scientific merit and alignment with current astronomy research priorities, or those with insufficient detail on broader impacts, tend to score lower during peer review.
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