Announcements and Introduction

The NASA Hubble Fellowship Program (NHFP) supports outstanding postdoctoral scientists to pursue independent research which contributes to NASA Astrophysics, using theory, observation, experimentation, or instrument development. The NHFP preserves the legacy of NASA’s previous postdoctoral fellowship programs. Once selected, fellows are assigned to one of three sub-categories corresponding to NASA’s “big questions”:

How Does the Universe Work? - Einstein Fellows
How Did We Get Here? - Hubble Fellows
Are We Alone? - Sagan Fellows

The Space Telescope Science Institute administers the NHFP on behalf of NASA, in collaboration with the NASA Exoplanet Science Institute (NExScI) at the California Institute of Technology and the Chandra X-ray Center at the Smithsonian Astrophysical Observatory.

Applications are now open for fellowships to begin in fall 2021. We anticipate offering up to 24 fellowships this year, contingent upon funding. The NHFP is open to applicants of any nationality who have earned their doctoral degrees in astronomy, physics, or related disciplines on or after January 1, 2018, or who will receive their degree before September 2021. Under certain circumstances, this date may be extended back to January 1, 2017. See the Announcement of Opportunity for further information

NHFP fellowships are tenable at U.S. host institutions of the fellow's choice, subject to a maximum of two new fellows per host institution per year, and no more than five fellows at any single host institution, except for short periods of overlap. The duration of the fellowship is up to three years: an initial one-year appointment, and two annual renewals, contingent on satisfactory performance and availability of NASA funds.

Detailed program policies and application instructions may be found in the official Announcement of Opportunity.

NHFP Host Institution
Employment Policy Change

Starting with the academic year 2022-2023, NHFP Host Institutions will be required to offer their NHFP Fellows employee status in order to be eligible to host additional NHFP Fellows. 

Learn More


2020 NHFP Fellows

NASA has selected 24 new fellows for its prestigious NASA Hubble Fellowship Program (NHFP). Read the press release.


Application Resources

Science Categories and Techniques

Frequently Asked Questions

Advice for Applicants

Visa and Benefits Information

Dates and Past Fellows

Important Dates and Deadlines

  • September 8, 2020: Announcement of Opportunity issued
  • September 8, 2020: Application website open
  • November 5, 2020, 7:00 PM EST (4:00 PM PST, 24:00 UTC): Applications due
  • November 12, 2020: Letters of reference due
  • February 2021: Award offers made


Current Classes of NASA Hubble Fellowship Program Fellows

Fellows through 2017

Prior to the NASA Hubble Fellowship Program, the Einstein, Hubble, and Sagan Fellowships were run separately. The lists of fellows from those programs can be found below.

Contact the NHFP
NASA Hubble Fellowship Program