About the NASA Hubble Fellowship Program (NHFP)
The NASA Hubble Fellowship Program fosters excellence and leadership in astrophysics by supporting exceptionally promising and innovative early-career astrophysicists.
The NASA Hubble Fellowship Program (NHFP) supports promising 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 NHFP is administered for NASA by the Space Telescope Science Institute (STScI) in collaboration with the Jet Propulsion Laboratory (JPL) and the NASA Exoplanet Science Institute (NExScI) at the California Institute of Technology and the Chandra X-ray Center (CXC) at the Smithsonian Astrophysical Observatory.
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 only one new fellow if the host accepted two new fellows the previous year. 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 can be found in the official Announcement of Opportunity.
Important Dates and Deadlines
- September 8, 2026: Announcement of Opportunity issued
- September 8, 2026: Application website opens
- October 28, 2026, 7:00 PM EDT (4:00 PM PDT, 23:00 UTC): Applications due
- November 4, 2026, 7:00 PM EST (4:00 PM PST, 24:00 UTC): Letters of reference due
- February 2027: Award offers made
- March 2027: Public announcement of Fellowship offers
Callout
Applications Are Open
Applications for the 2027 NASA Hubble Fellowship Program are now being accepted. The deadline is October 28, 2026.
End callout
The Host Employment Policy
Host institutions must offer their NHFP Fellows the opportunity to be employees. The NHFP maintains a list of institutions that have informed us whether or not they can host new fellows under this policy.
NHFP Symposia
Browse details on all NHFP Symposia, including links to webpages, recorded talks, and programs.
Application Resources
Meet the Fellows
Current Classes of NHFP Fellows
Prior Classes of NHFP 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.