51 Pegasi b Fellowship 2026/2027: Up to $492,000 Over Three Years for Six to Eight Planetary Astronomy Postdocs at 28 Host Institutions, Closing 1 October 2026

51 Pegasi b Fellowship 2026/2027: Up to $492,000 Over Three Years for Six to Eight Planetary Astronomy Postdocs at 28 Host Institutions, Closing 1 October 2026

The 51 Pegasi b Fellowship is one of the few postdoctoral awards in astronomy that gives a newly minted PhD three years of genuinely independent research money rather than a slot on someone else’s grant. The Heising-Simons Foundation opened the 2026/2027 cycle on 7 July 2026 and will close applications on 1 October 2026 at 2pm Pacific Time. Each fellowship is worth up to $492,000 over three years, and the Foundation anticipates awarding six to eight of them.

This is the tenth cycle. Emily Schaller, the Science program officer who leads the fellowship, noted at the July announcement that since the 2017 launch the programme has grown into a community of 74 fellows and alumni, many of whom now hold faculty or staff astronomer positions at colleges, universities and observatories worldwide. That track record matters when you are deciding where to spend your limited autumn application energy: this is a prize fellowship with a demonstrated conversion rate into permanent positions, not a speculative new scheme.

Key details at a glance

What the fellowship actually pays for

The headline figure of $492,000 is a three-year total that bundles several things a typical postdoc contract separates. It covers salary and benefits, indirect costs to the host institution, and — the part that distinguishes this award — highly flexible discretionary research funding available throughout the grant.

The Foundation and its host institutions describe that discretionary spending broadly: travel, family care, moving expenses, research equipment and personal computers are all named examples. In practice this is the difference between a fellowship where you must ask a PI before booking a conference and one where you can decide in March that your project needs a GPU node, a two-week observing trip and childcare cover for it, and simply do all three. For early-career researchers with caring responsibilities, the explicit inclusion of family care is worth reading twice — it is not standard language in astronomy postdoc awards.

Beyond money, the fellowship provides three things the Foundation names deliberately:

• Time and space to establish distinction and leadership in the field. The expectation is a coherent independent research programme, not service work on an existing project.
• Mentorship by an established faculty member at the host institution. You are not left to sink; you have a named mentor, but the research agenda is yours.
• An annual summit bringing together current and past fellows. Previous summits have run workshops on science communication, time management and mentorship strategies. This is the mechanism that turns 74 scattered fellows into an actual network, and it is a real part of the offer.

At the end of the three-year term, fellows may apply for a fourth year of support assuming satisfactory progress. There is also a distinct off-ramp worth knowing about: a fellow who secures a faculty or permanent staff position in astronomy may apply for a grant equivalent to one year of funding — effectively a startup contribution that follows you into the new job rather than being forfeited.

Who this fits

The fellowship is aimed at scientists who sit in the overlap between planetary science and astronomy. The Foundation frames planetary astronomy as the field where those two communities meet to characterise planetary systems, and the eligible topics span:

• exoplanet detection and characterisation
• solar system science
• planet formation and evolution
• planetary atmospheres
• protoplanetary disks
• closely related topics

Methodologically it is deliberately catholic. Theorists, computational modellers, observers, instrument builders and laboratory experimentalists are all in scope. Looking at recent cohorts makes that concrete: the 2026 class includes people working on the Moon’s magnetic past as a probe of lunar formation and interior structure, lightweight optics designed to detect biosignatures beyond the solar system, and exoplanet characterisation across several host institutions.

You are a strong fit if you have a specific, independent research programme that needs three years of protected time and does not map neatly onto an existing grant. You are a weaker fit if your plan is essentially a continuation of your PhD supervisor’s project under a new label — the award recognises “early-career investigators of significant potential” and expects a “strong, coherent research program”, which reviewers read as evidence of intellectual independence.

Eligibility in detail

The criteria are unusually clear, which makes self-assessment easy:

Institution of origin. Applicants may come from any academic institution or research lab, nationally or internationally. There is no requirement that you currently be in the United States.

Citizenship. US citizenship is not required. The important caveat is that all visa and work permit paperwork is the responsibility of the fellow and the host institution, not the Foundation. If you will need a visa, raise it early with your prospective host — the administrative timeline, not the science, is what usually causes trouble here.

Degree field. A doctoral degree in astronomy, physics, earth and planetary sciences, chemistry, mathematics, engineering, or a related discipline. The list is broad on purpose; an engineering PhD building instrumentation is squarely eligible.

Degree timing. This is the hard gate. Doctorates must be awarded after 1 January 2025 and before 31 December 2027. That window admits both people who finished recently and people who have not yet defended but will do so by the end of 2027. Check your conferral date, not your defence date — institutions differ, and the Foundation’s wording is about when the degree is awarded.

Extensions. Exceptions due to extenuating circumstances — family or medical leave that extend the window by up to one year — may be granted case by case. You request these by emailing [email protected]. Do this before you submit, not after.

Host institution. Research must be pursued at one of 28 participating institutions. This is the criterion applicants most often underestimate, and the next section deals with it separately.

The host institution question

You cannot take this fellowship anywhere you like. The Foundation maintains a list of 28 participating host institutions, and your application has to land at one of them. Recent fellows have been placed at institutions including Purdue, Northwestern, Harvard’s Earth and Planetary Sciences department, the University of Chicago, Carnegie Science’s Earth and Planets Laboratory, UC Santa Cruz, UC Santa Barbara, UC San Diego, Dartmouth, the University of Michigan and Johns Hopkins — but the full current list, and the named contact at each, is published on the Foundation’s site and should be checked directly rather than inferred from past placements.

Treat host selection as a substantive part of the application rather than a box to tick. Several things follow from it:

• Mentorship is institutional. Your named mentor is a faculty member at the host. Hosts publish their participating mentors; Purdue, for example, lists 16 faculty mentors across its College of Science, with research summaries for each. Reading those summaries and writing to a specific person beats a generic enquiry to a department office.
• Facilities differ sharply. Northwestern’s CIERA offers fellows lead-investigator status on telescope time including Keck and MMT, plus high-performance computing clusters. Other hosts have laboratory facilities, spacecraft data pipelines or instrument shops. Match the host to what your project physically needs.
• Benefits differ. Salary and benefits are administered by the host institution, so the practical value of the same headline grant varies with local cost of living and the host’s benefits package. If you are choosing between two viable hosts, ask both about their postdoc benefits before you commit.

The Foundation explicitly invites questions about research collaborations, faculty mentors and resources at host institutions, and publishes contacts for that purpose. Use them in August and early September, not in the last week.

How to apply, and the timeline

The mechanics are simple; the preparation is not.

1. Submit the online application through the Foundation’s application portal, linked from the programme page. A preview of the form is published so you can see the fields before you start — pull that preview early so you know what you are writing towards.
2. Arrange two letters of recommendation. Recommenders submit through a separate Foundation form, not through your application. This is the most common source of last-minute panic in fellowship season: your letter writers need the link and the deadline well in advance.
3. Read the application guidelines document published by the Foundation, which sets out review criteria, the full materials list and frequently asked questions. The specific page limits and component list for this cycle are set out in that document; this guide does not reproduce them because they are the kind of detail that changes between cycles and should be read from source.

The dated timeline for this cycle:

• 7 July 2026 — 2026/2027 application cycle opens.
• 1 October 2026, 2pm Pacific Time — application deadline. Note that at least one host institution has advertised the deadline as 11:59pm on 1 October; the Foundation’s own stated time is 2pm PT, and that is the one to work to.
• Spring 2027 — based on prior cycles, selections are announced in this window; the 2026 cohort’s host institutions published their announcements in early April 2026.
• Fellowship start — following the announcement, in coordination with the host institution.

A 2pm Pacific deadline is an afternoon cutoff, not an end-of-day one. If you are applying from Europe that is late evening local time; from East Asia it is the following morning. Convert it now and put the converted time in your calendar.

Preparation strategy and what reviewers are looking for

The selection language points consistently in one direction: independence. The award “recognises early-career investigators of significant potential and provides them with the opportunity to conduct independent research”, and awarded fellows “are expected to carry out a strong, coherent research program in planetary astronomy”. Two words there carry weight — strong and coherent. Reviewers are reading for a programme, not a list of papers you could write.

Practical implications:

Write a programme, not a project. Three years of funding should produce something that reads as a research arc with a beginning, a middle and a defensible end state. A proposal that is one good idea plus filler reads worse than a proposal with three tightly linked ideas.

Make the independence visible. Say explicitly what is new relative to your PhD and to your prospective mentor’s existing work. If your project builds on your thesis, name the intellectual step you are taking beyond it. Reviewers who cannot tell where your supervisor stops and you begin will discount the application.

Justify the host. A proposal that could be done anywhere signals that you have not thought about execution. Name the instrument, the cluster, the telescope access, the laboratory or the collaborator that makes this host the right one.

Use the flexibility in the budget narrative. The discretionary funding is a selling point of the fellowship; showing that you have a concrete plan for it — a specific observing campaign, a specific piece of equipment — demonstrates that you have costed your programme rather than assumed it.

Brief your recommenders properly. Send them your proposal draft, the fellowship’s emphasis on independence, and the recommender submission link together. A letter that speaks to your capacity to run your own programme is far more useful than one that praises you as a diligent student.

Common mistakes

• Missing the PhD window. Awarded after 1 January 2025 and before 31 December 2027 is a hard boundary. If you are outside it because of family or medical leave, email [email protected] for an exception before the deadline rather than assuming the rule will flex.
• Assuming any institution works. The 28-host constraint disqualifies otherwise excellent applications every year. Confirm the host is on the current list.
• Approaching a host too late. Mentors at popular institutions field many enquiries in September. Contact in August gives you a real conversation; contact on 25 September gives you a polite deferral.
• Treating the letters as an afterthought. They go through a separate form. If your recommenders miss it, your application is incomplete regardless of how good the proposal is.
• Working to the wrong deadline time. 2pm PT on 1 October, not midnight.
• Recycling a generic postdoc statement. The fellowship is specifically for planetary astronomy and specifically for independent programmes. A repurposed general astronomy application reads as such.
• Ignoring the visa timeline. Eligibility is open internationally, but the paperwork sits with you and your host. If a visa is needed, discuss the timeline with the host’s HR office before you accept anything.

Frequently asked questions

Can I apply before I have defended? Yes, provided your doctorate will be awarded before 31 December 2027 and after 1 January 2025. The window is defined by the award date of the degree.

Do I need to be in the United States, or a US citizen? No to both. Applicants may come from any academic institution or research lab, nationally or internationally, and US citizenship is not required. Visa and work permit arrangements are handled by you and your host institution.

How competitive is it? The Foundation anticipates six to eight awards per cycle against an international applicant pool in planetary astronomy. Treat it as a highly competitive prize fellowship and apply to other opportunities in parallel.

How is this different from the Astronova Fellowship? They are companion programmes from the same Heising-Simons Science program, with deadlines one day apart in 2026. Astronova is specifically for developing astronomical instrumentation across astronomy, astrophysics, cosmology and planetary science, and runs through a smaller set of host institutions. 51 Pegasi b covers planetary astronomy research broadly — theory, observation, computation, instrumentation and laboratory work. If your work is instrument building, look at Astronova; if it is planetary astronomy research more generally, this is the one.

What happens after three years? You may apply for a fourth year of funding assuming satisfactory progress. Alternatively, if you secure a faculty or permanent staff position in astronomy, you may apply for a grant equivalent to one year of funding.

Can the discretionary funding really be used for family care? Family care is among the examples named for discretionary spending, alongside travel, moving expenses, research equipment and personal computers. Confirm the specifics with the Foundation and your host’s administration, since disbursement runs through the host institution.

Who do I contact with questions? [email protected] for programme-level questions, or the published institutional contact for questions about a specific host, its mentors and its facilities.

Next steps and official links

If you are eligible, the sequence for August and September 2026 is straightforward:

1. Confirm your PhD award date falls inside the eligibility window, and request an exception now if it does not and you have grounds.
2. Pull the current list of 28 host institutions from the Foundation’s site and shortlist two or three whose facilities and mentors match your project.
3. Email your preferred host contacts in August. Ask about mentors, facilities and postdoc benefits.
4. Download the application guidelines and the application preview so you are drafting against the actual form and criteria.
5. Approach your two recommenders now, with your draft proposal and the separate recommender submission link.
6. Submit ahead of 1 October 2026, 2pm Pacific Time.

Official sources:

• Programme page and application links: https://www.hsfoundation.org/programs/science/51-pegasi-b-fellowship/
• Cycle announcement, 7 July 2026: https://www.hsfoundation.org/news-stories/51-pegasi-b-fellowship-now-accepting-applications-through-october-1-2026/
• Heising-Simons Science program overview: https://www.hsfoundation.org/programs/science/
• Questions: [email protected]

Deadlines, host lists and eligibility windows are set by the Heising-Simons Foundation and can change between cycles. Confirm every detail against the official programme page and the current application guidelines before you submit.